Oh, I will never hold back on what I really think on imgflip. If I wanted to be diplomatic, I'd have another f**king meeting with my boss.
Yes, a meme by definition should be pithy - and the first sign of a bad meme is "too many words". You'll get people accusing you of saying so out of political bias - but the bottom line is that we're memers, not columnists. We're all trying to express something complex, but if you don't say it in simple ways, you lose people, not because they disagree with you but because you took a simple thing that people enjoy in simple ways and made it complicated.
And I hate to trample on your credit, but certain forces on the imgflip user base have figured out how to get the views and upvotes latched on to search engines and reddit feeds - and those certain forces like you and they don't like me, if you get what I'm saying. I used to rack up thousands of views when I posted memes about Kermit the Frog arguing with Roadrunner and stuff like that, but nowadays I consider my memes to have done well if I get six or seven upvotes - because those were six or seven people from the imgflip user base, not because someone cross-posted it to tumblr or whatever.
It's not good or bad either way; nobody decides what you get out of imgflip, just you - but it doesn't surprise me that you got better feedback from Facebook than you did from here.