This is very wrong. One of the most studied ways of breaking bad habits is by introducing friction. Nothing stops me from getting in my car and going to McDonalds but that is a lot of friction. It's easier to just stay home and cook something I have.
Totally disagree. Killing my third party app reduced my reddit usage by like 90%. Now I really only use it on my desktop PC.
On mobile, when I tap reddit search results I am never logged in which means I have to go to old.reddit.com to see the full thread and comments. If they added a log in wall I'd just stop tapping reddit results on mobile.