The audio jack on Raspberry Pi's has always been terrible quality anyway. Ok in a pinch but it's not a huge loss. If you want quality analog output from a Pi you need a DAC hat.
If you're using a pi you're already in a pinch, putting a dac on a pi seems alot like putting lipstick on a pig, the only scenario where it wouldn't be overkill is music streaming and i highly doubt thats even a majority of pi projects with audio
Yeah, that's true, and I did that when I built a 'streamer' from a Pi 2. It was great. At some point though the quality of the built-in jack did improve, and so when I built a sound/lighting effect box for a toy theatre with the Pi 4 it was plenty good enough to use, and made it simpler and cheaper to put together.
There are loads of cool projects for the Pi (synths etc) which chuck out audio and sound good enough through the built-in jack.