[General Questions and Answers] simplepinoi177:
I can confirm with my own experience that there are methods for unlimited original quality uploads; here's some things you need to know...

while Pixelify has modded things where you can get unlimited uploads, Spoiler content hidden. This blurred previous statement was true at the time of writing, but no longer true. The main branch of Pixelify does now offer spoofing the Pixel XL that makes it unlimited at original quality.

There have been many reports I've seen that complain that, even if one only applies/installs the Google Photos hack from Pixelify, it still installs a lot more to get their mod/app working that modifies a lot of the native Pixel experience; so if you use a Google Pixel, it often conflicts with much of the native experience on it.

This also might explain why when users install and even though they implement Pixelify, pictures and videos are still counting against -- because they have not changed the settings to "Storage Saver" and thus those photos/videos wouldn't apply.

There is a branch/off-shoot of Pixelify that is the LSPosed module/app called Pixelify Google Photos (or Pixelify GPhotos) by Balti/Baltiapps that throws that caution to the wind and spoof the original Pixel (spoofing just Google Photos app) so one is able to achieve unlimited original quality uploads.

I, and others, have witness and experienced success in this that I was able to make a 1.8GB (that big, so it would be very obvious if it had been taken up by my free 15GB) video recording that showed that it did not count against the storage.

Many people get confused because they used to see that "unlimited" in the storage settings space, but in the new Google Photos app (& under this spoof/mod), you simply see it on the bottom of the photo's/video's details stating "This item doesn't take up space in your account storage."

There was confusion before when Google had first changed showing Google Photos in Google Drive and/or had initially showed the data taken up in their Google account's free storage allotment but separated the Google Photos storage -- most likely when, under Pixels, since it was unlimited for Pixels they didn't join the two storages -- but since Google has done away with doing that and joined together for a sense of combined unity on the two affects on storage (most likely to push for advertising their Google One service for larger storage), I think it caught some people by surprise and/or misunderstanding.

But most importantly, what must be said is,

most surely

Google will catch on to all of this and will make implementations to put a stop to the practice; at best, they will just stop current uploads not going against regular storage, at worst they might even remove photos that have been identified as being uploaded by an OG Pixel when the phone is 7 years old now or even deactivating accounts themselves! So proceed with caution being aware of this possibility... I simultaneously use Amazon (Prime) Photos to backup my photos (in original quality) and plan to backup all my photos & videos from my Pixel 7 Pro to an external storage to prepare for this eventuality. I suggest you don't "put all your eggs in one basket", so to say...

Hope you find this informative...feel free to respond here or send a PM if you would like to know more or getting things working...