There's no "right" way or "wrong" way, just your way. yours is different than mine. I don't like sliding in standard tuning, I can't do a lot of the things I want to do when sliding in standard tuning.
If Standard tuning floats your boat, that's great, but I see no reason to try to ridicule others who see and play things different than you do.
If everyone did things the same, it'd get boring quickly, no?
I had the money to buy a guitar devoted to
slide, so I bought one. Had it set up for slide and it's perfect to the task I set for myself. I don't mind swapping guitars, I have a system worked out and it gives me what I want.