Yep, I ended up looking into this quite a bit more, and now agree with you. Evernote ratings were historically lower before the Bending Spoons acquisition. There are shady things you can do with ratings like ask whether they like they app before redirecting them to the rate it, it does seem like I was over-indexing on some anecdotes (I also worked with some ex-Evernoters, so I was coming in a bit biased). Thanks for pointing out the trend!
Evernote on iOS currently has a 4.4 star rating.
For comparison, the Obsidian iOS app has a 4.5 star rating.