There aren't many social media communities with quality gamedev content, because professional (especially AAA) developers with decades of experience rarely participate, and you can only have so many beginner communities. The lack of participation exists for many reasons:

1. Befriending fans or participating in their communities leads to constant requests for insider info, which is tiresome.

2. Social media is for extreme content. Reddit, for example, rewards the most shocking content and most Redditors are aware of this, so measured voices get drowned out, or worse: blindsided and cancelled for minor quirks of expression.

3. Armchair developers with very little real experience, who are the main participant of game dev conversations on social media, often lecture long-term professionals. Particularly, new software engineers tend to really over-complicate code until it's "perfect" in some philosophical ways but not performant nor maintainable. It is difficult to participate in discussions where they outnumber you 50:1. Sooner or later someone will "epically own" you with Uncle Bob quotes.

4. The current zeitgeist in the gaming community is that studios are evil for a number of reasons, some of which are not pandering to contradictory player demands (next-gen graphics are a waste of money/game with previous gen graphics looks like PS3; visually appealing women characters are sexist/visually average women characters are woke; games should not cost more than $69/games that use monetization engines to keep the price at $69 are greedy), and some of which are abstract and universal ("this game had so much potential", "<game feature> is trash", games not meeting delusional expectations, etc). Influencers often flip-flop between these criticisms reviewing any game they come across, so these ideas have now taken hold in social media, and are often barriers to respectful communication.

5. Many devs align with the games industry a lot more than the idealistic "games is my calling" new developer. About 50% of the industry is people who do games as a paycheck (they have families, kids, parents, they are battling the cost of living crisis, they don't have the energy for ideological fights at work nor do they want to upset their source of income), or people who do games as a career (they want to become VP of technology, studio head, etc. as a life goal). These people are completely under-represented in beginner circles who sometimes consider their goals vile. Many people who have worked in the games industry for decades will know a few studio heads/executives personally and align a lot more to the business decision-making in the industry than the average social media user. Because SM often promotes quite inflammatory language, it becomes difficult to find common ground.

As a result, most game dev professionals avoid social media, particularly Reddit, YouTube, Facebook, and rumor forums, because it's really grating to socialize there, and we get our social needs met by more accepting groups of people. Even Twitter/X/Bluesky, with a slightly larger dev community, loves the extremes of opinion that become equally exhausting.

HackerNews so far is a platform that doesn't tease you for insider information, it promotes measured voices, and likes the practicalities of tech + business, as opposed to idealistic extremes. Therefore, I believe there are more professionals here, and the community isn't running out of steam.

There are other niches for game developers online, such as GameDev.net, GameDeveloper, and industry-insider publications like GameIndustry.biz. It is much easier to write down an article for GameDeveloper or speak to editorial staff about what concerns you to get an article out there on industry publications than to try and discuss any sort of meaningful matter on broader social media.