I don’t know what you’re using but request desktop version in Firefox on Android works fine. Tried it just now.
Wait, what? We’re talking about Reddit trying to force you to use their app instead of a browser. That’s on mobile. Are you saying your experience on a desktop is that Reddit is telling you to use their app instead of the browser, on the desktop?
Also, you have to be a madman to even try regular Reddit instead of old.reddit on the desktop.
Yes, on Firefox on endeavorOS I get a prompt to switch to the app visiting subreddits like this.
And i don’t use regular reddit, I just don’t use reddit often enough to install a redirect plugin.