I'm pissed at HOW they did it. Without an ounce of respect for the user base. They could have made it affordable and turned a profit out of 3rd party apps, they could have been more civil on the communications, they could have explained the problem and asked suggestions, even if they had no intentions on doing something else.
But they choosed a huge FU, not only to it's end users, but to people that were trying to make reddit a better place, either at barely a profit, or with volunteer work.
When the controversy first started, I thought reddit was doing the ol "announce something way worse than what we actually intend so when we compromise and get what we really want everyone will be happy" but no, they didn't budge at all and acted like assholes in the process. If they just remained silent the whole time that would have been better. Instead they showed how they truly do not care about their users.
They could have just straight up said, "hey, we are getting rid of third party apps because we need to consolidate where our users browse reddit for our IPO". I would have been annoyed, but the way they pretended that all that TPA devs were too unreasonable to work with their outrageous terms genuinely pissed me the fuck off.