E11S is a VERY huge jump from E10S. It's like comparing apples to oranges, so you can't really use 10S to gauge your ability to savage raid.

I'm not certain on how other DCs handle raids, but Crystal (ime) is a lot more lax than other places, so it may just be the pressure from the time constraint(s) until EW.

If I were a static accepting people in a "mid-core" group, I definitely wouldn't have taken in someone who's been MIA for a while, nor do they not bother with the relic/getting augmented exarchic at the least (many ppl cleared w/o relic, but it does help massively)
All-in-all, I dont know you as a person so i couldnt confirm if it was a personality thing, but it was most likely just them not understanding what mid-core is, I would definitely recommend trying to get into a casual group tho if you continue with raiding.