I'm married to a Korean and we've spent a bit of time there off and on. I've studied up on ancient to modern Korean history and have a better than normal understanding of cultural norms. My language skills are sadly still a mess.

I would say that, broadly speaking, yes. Korea today is a bit more welcoming than nearby countries like Japan, China, or Taiwan, etc. Since the last dictator in the late 80s, there's been a general consensus understanding that for Korea to survive as a civilization (being next door to more dominant and better known cultures from Japan and China), it must integrate with the rest of the world, and produce meaningful cultural exports and become valued by the international order. The rise of Korean media is not an accident but part of a long-term series of programs to build viable industries in film, music, food, etc. and have those industries take root outside the country in order to create export markets -- very important when your entire economy is built on being export driven. Almost all of the Koreans I personally know, regardless of industry, would jump at the chance to work with a foreigner if it meant they could do some international business.

Korea is pretty small, so you quickly exhaust domestic travel options. As a result, the average Korean, while being somewhat parochial in outlook is pretty curious about the rest of the world, many now have the means to travel abroad, and they do so pretty often. It's not uncommon to be at the Louvre or the British museum and see tour buses of elderly Koreans unload. The succeeding generations, being better educated and often with better foreign language and cultural skills often just skip the organized group tours and go on their own.

When I first went to Korea, even seeing any signage in English was rare. Today, in Seoul you can usually find "ok" English signage around tourist spots, and it's not as impossible as it once was to find somebody who can have a very basic English conversation. Many vendors will have English language signs and it's atypical to be given "tourist" prices. I'd say in those respects it's easier to get around Seoul than Tokyo for example. If I had to sum up the Korean approach to dealing with foreigners is that "your money spends just as well as anybody else's".

Housing costs, especially in Seoul, can be high. If you are from a U.S. Coastal urban megalopolis area, they'll be comparable. If you have lots of cash on hand, the Jeonse (Key Money) practice can be helpful in helping set a low monthly budget. Outside of Seoul, housing is much more affordable, and to be honest, I find the smaller cities much more enjoyable and they aren't far from all that Seoul has to offer by bullet train. But locals may not be happy if an influx of nomads drives housing prices up. If I had to pick, I'd probably choose either Jeonju or Gwangju to live in (cheaper COL, great food, nice chill vibes in the southwest) or maybe Daegu if you like proximity to hiking in the mountains, and not far from the beaches in Busan. But I'm old, if you want nightlife, Seoul is where it's at.

All this combines to make being there pretty decent for the average foreigner, but not necessarily "cheap" like you might find in Thailand or other typical digital nomad countries. You'll always find assholes or grumpy old people like anywhere, but on the average you'll find most people on the day to day easy enough to interact with, and eager to do business with you. That being said, there are very few protections against discrimination. If something ends up with the police, it's pretty typical for the foreigner's account to be dismissed still -- so there's still some growing pains there -- it's not uncommon for media plotlines to revolve around some ill that a foreigner brought in with them.

With the demographic crash happening, and Korea becoming more of a destination country for foreigners (a little over 4% of the population are foreign and it hosts one of the largest American immigrant populations in the world), I expect there will still be quite a bit of social development occurring as the nation figures out if it can really welcome foreigners in a way that aligns with national aspirations -- but it's likely that we'll see a more cosmopolitan country in the future. The changes just in the last 20 years have been phenomenal to see first-hand.

If you want to see what pretty normal interactions are like with Koreans, I'd recommend the youtuber "Where is Dan", who's on a mission to visit every district in Seoul and practice his pretty basic conversational level Korean with as many shopkeeps and people on the street as he can get on camera. But the interactions are 100% authentic and typical of what a foreigner might find there. https://www.youtube.com/@whereisdan/videos