I've done a handful of those online "tests" where it's a 320kbps mp3 and flac or wav clips.
I could almost always tell the difference. The prob was that I would think the mp3 was the higher quality one. In a friends group years ago, another friend of mine had similar results.
A lot of those "tests" also are strategically designed such that the bitrate of the 320mp3 isn't saturated enough to run into bitrate aliasing. A lot of people, myself included, sometimes lean on flac because we have heard it make a difference, and it's so shitty that we just go to the higher quality when we want archival quality versions.
Also, if you start introducing eq or other processing for various reasons, when you start magnifying sections of lossy, or even lossless audio, you can start hearing missing data or compression artifacts.
I think it was like last year or so I had a huge discussion irl about the word centaur and how it should be pronounced. Sen-tower is wrong, right out; sen-tarr is how I used to pronounce it; but it came to my and the other people's attention that I was discussing this with that the correct way to pronounce it is sen-torr, like Ford Taurus or a taurus demon. Like, "I tore that ugly poster off my wall".
Yeah they're gonna need to save all the money they can because everyone I know is cancelling their subs to basically every service, from Amazon to Spotify to Crunchyroll to Netflix.
These fucking companies think they can do whatever they want and we'll just roll over and take it and continue to give them cash every month.
Brb, buying hdds.... Qq