I’ve used a lot of Reddit apps. Slide, Red Reader, Infinity, Stealth, Joey, Boost, Reddit is Fun, Sync, etc.

And I preferred the paid apps over the FOSS ones with the better filtering options it had and UI and display customization I preferred. It’s preference at the end of the day. FOSS options were available yet people chose to pay, so there was something people preferred about them enough to pay.

FOSS apps will be there anyways and be not affected.