This seems anecdotal. It’s a good learning experience, but only for that *one* particular sorority. If I were you, I would instead advise against that specific sorority. If you said ‘all’ sororities from that reasoning it would seem a bit unreasonable. I would think gesture would then be more acceptable. The kneeling might make for a good horror story though.
It may feel pressuring, to ‘be greek and with other greeks’. Don’t frame it like that. Before that, you’ve been with ‘non-greeks’ the whole time and never thought about that, until…thinking about how to improve your status. (Not you, but myself and other people maybe) Greek life might give us better status, better connections, better opportunities, and we probably got them. We just stress at the nitty gritty things after the fact. If you haven’t been in the fray of greek life you’d be wondering how fun it would be being greek and that you wish you hadn’t turned down the opportunity. (Probably)
I think greek life is better for those with small friend circles/family circles, because greek life in a sense, becomes your family. I know you are regretting joining, but try to remember back to the points in rush that made you *want* to join.
Re-connect with that sister that you really jived with, or the one that you looked up to. I know I should re-connect with some brothers of mine. I am just saying, you are where you are, so take the positive out of it as well.