that's how they did it. They put a 10 request a minute on bots and a higher oauth limit (100) for individuals. large User client type apps could have somewhat easily converted over to that system but due to time constraint they didn't. I do think they extorted their third party devs sure but, honestly the individual user limit isn't super unreasonable as long as you aren't liking or disliking every post. the search api is 100 posts per Api request, it was more the no NSFW and the no advertising limits they put on it that sucked
edit: its actually 10 or 100 per minute not hour