So I felt the same before I got a flex plate to test for WhamBam. You can still use it the way you currently do, so from a clean up point of view it changes nothing. As part of my testing I printed everything from a plate full small flat objects, to large almost solid stuff as well a delicate stuff. I found before a flex plate I could damage stuff from scrapping or knocking it off, with a flex plate I didn't.I’ve always been mystified as to the appeal of flexi build plates for resin. Surely it’s just more mess, more to clean, and I don’t see the upside. I’ve always just knocked my prints off and put it back, I don’t even clean it unless I’m changing resin or don’t plan to print again for a long time.
I’d be interested to hear the positives to them.