Can I hear a difference between MP3s and uncompressed audio?

Correctly identified with 100% accuracy. The author said they can't, but for me the mp3 versions have noticeable high frequency artifacts that make the recording sound slightly less clear. Using Sony XM5

Pretty great demo! It'd be great to see a 128/192 comparison.

I had Tidal many years back, and from the Lossless v Regular I only ever noticed a difference when it came to breathy sounds/etc. I did see that Tidal would burn through like 50GB of data monthly though.

Also - you may want to test some more modern recordings, the microphone/mastering quality of things nowadays is far better than what it was 2 decades ago (despite what some audiophiles may claim)

Some people simply have better hearing than others.

Also, you can train yourself for what to listen for, to a point.

I will concur with that.

When I first started encoding MP3s I used a 128kbps rate which is noticeably inferior to the original CD. I noticed this in the early 2000s when I would up listening to a CD of some music I usually listened to as a 128kbps MP3 and was blown away with how much more I heard.

I'd say that 192kbps is much better and the 320kbps that the author advocates is basically transparent.