My 2013 15" MBP will reach the end of its life at some point and I'm looking to replace it with a 16" ARM MBP when they're released.

I do full stack web dev with PHP, and JS/Vue/static site generators on the front end. I also do some visual design, and occasional lightweight video editing (iMovie only).

I'll use the new machine for at least 3 years, and maybe even 5 or 6 years. I'd like to get 32GB of RAM, but it is an expensive upgrade, it's not something I'll add just for the sake of it.

How useful do you think the extra 16GB of RAM will be for this sort of work?