But there is now mouse support. It came with iPad OS in September. I use a mouse all the time for the things you mention.
I understand that, but at the moment that means carrying a mouse with you when on the move or buying a Brydge keyboard with built-in trackpad. Although the pencil is handy for that stuff. I'd like to see a Smart Keyboard with trackpad from Apple, I think that could be a game changer along with improved pointer support in iPadOS.
Anyway, I've tried these things and I'd much rather just take my laptop.