Same, they could have easily bundled in third party apps as only something you can use with Reddit gold or something, and I would have happily done that.
I haven't deleted my account or anything, but after RIF Is Fun closes it's doors, I will likely be on Reddit very seldomly if at all. Most of my browsing of Reddit has been via RIF since 2015. The official app has always been a slow, glitchy, ad-riddled piece of shit. RIF was like using a mobile-friendly version of the old layout and was 1000% more stable. So instead of finding a way to integrate something similar into the official app and fixing their bloatware, they decide to kill third party apps altogether. You'd think EA owned Reddit by the way they're going about things these days.
No skin off my nose if Reddit ceases to function. The Reddit that exists today bares very little resemblance to the website I fell in love with 14 years ago.