Left the Guild

That seems pretty silly to me.
Yes we are a pony/social guild first, Bastiat has said so on many occasions now, but you can't really go in to a raid with that same mentality and expect to progress very far.
If every person(pony) doesn't spend the time and effort to gem, enchant, glyph, spec and learn their rotation properly then they are essentially wasting the time of the other people in the raid. It's also irritating because if you do need any of the above items you can just ask in-guild and someone will be able to make whatever it is you need. And there are plenty of resources online that will tell you how to get the most bang out of your spec.

If someone gets angry with you because you ask them to sit because we need to min/max the raid to be able to actually progress then instead of getting angry they should ask 'what can I do to improve my dps/healing/tanking so that I will be able to attend next raid?'. This is just the cold hard reality of raiding, and unfortunately it's going to stay that way (unless Blizzard decides to go back to the WotLK raiding model).