I think the big difference since the recent threads is the news that Apple is adding support for JPEG XL to Safari.
For HEIC, I understand, but it's weird that they are the only ones supporting JPEG XL while it is a royalty free open standard and the open source browsers don't support it.
I am aware, but note that Safari relies on ImageIO for image decoding and AVFoundation for video decoding, two components of the proprietary OS. Chrome and Firefox on the other hand ship a lot of their own decoders. Those parts are not open source (nor is the GUI, while Chrome is open source also from the GUI point of view, it's really just a bunch of google-custom modifications/extensions that are closed).
https://news.ycombinator.com/item?id=33399940 (2022-10-30, 146 points, 95 comments)
Also a few more submissions of issue 1178058:
https://news.ycombinator.com/item?id=33403430 (2022-10-31, 13 points, 2 comments)
https://news.ycombinator.com/item?id=33412340 (2022-11-01, 60 points, 42 comments)
https://news.ycombinator.com/item?id=33705725 (2022-11-23, 32 points, 1 comments)