He doesn't really strike me as being all that legit, no 🤔

Guacamelee is nice, I haven't played the sequel yet though. Wonder Boy: The Dragons Trap is an oldie but a goodie too, there's a nice remaster of it with upgraded graphics and a couple of gameplay tweaks for modern systems.

Also if you also like the idea of trying some simpler/more linear kind of Metroidvania's, some I'd like to recommend are Iconoclasts (loved this one and it gets a lot darker than it first seems), Cave Story, Shantae and the Pirate's Curse, and Aggelos.

And I haven't played them yet, but I hear the Ori games and the Axiom Verge games are also pretty good. Blasphemous is also said to be another great one though the last of its free DLC is coming in December so you might want to wait to get that one - I'm looking forward to it too.

I quite like them

Yes the Activity page doesn't have links to the rest of people's Profile sections and other info like it used to (all they can see is a person's activity feed and that's it) which is where the confusion's come from, I've reported that now.

Edit: Fixed now, Activity page links to the rest of the profile again.

Yep, it's a karma/likes meter that shows the total amount of likes on someone's content such as photos and videos. 1 filled droplet = 50 likes. If you hover your cursor over someone's row of droplets, you'll see how many likes they have.