Isn't browser technically third party app?
joking aside, some of us used Browser and old. reddit.com .
BTW I'm now using Firefox to access Lemmy as well.
I'm also using Firefox to edit all my reddit history on second device as of now.
I didn't leave reddit because I couldn't use third party app or mod tools, I left because I got fed up with being "noise" and taken for granted. Also I dislike monopolistic corporation behavior . They ruined gaming when I used play, they spy on every step I take and want to control everything I bought as they see fit.