The fees aren't small, they also forbid 3rd party apps to show their own ads and will be blocking NSFW subreddits from API (none of those things apply to their

The fees aren't small, they also forbid 3rd party apps to show their own ads and will be blocking NSFW subreddits from API (none of those things apply to their mobile app). So ultimately they want 3rd party to use subscription model to ultimately get worse experience.