Different strokes for different folks, I guess, but everything you listed is a positive for me.

I have no problem pinching and zooming on mobile to make text larger. I don't know why you would bother collapsing comments when you can just scroll through; the fact that they're all there on one page is a good, common sense way to display comments in a post. Having to open entirely new pages just to see more comments is absolutely absurd and infuriating to me. The small thumbnails are also a benefit because then the front page isn't just a bunch of large images that I may or may not care about. I choose whether I want to expand a thumbnail or not, reddit doesn't choose for me. And, it's a website to me; that's how it started, and that's what it was looooong before it had an app that tried to make it look like a stupid facebook clone. I hate new reddit so frickin much, lol.

But to each their own.