Yes agreed,
I don't like change, I have ADHD, and tech is a big cause of anxiety for me. For me, I just can't stand that we can not drag and drop emails themselves, or attachments.
"Toggling" between is also a pointless suggestion when you can just stay in the old outlook and do everything you want. The purpose of a "New" version, is to improve on the old one. I don't see how this is an improvement in any way shape or form I'm afraid. Considering we have to pay for all this, I'm not sure why you don't take feedback on board and give people what they require.
It kinda makes the whole "Please give us feedback" nonsensical when you don't change things back.