I have a late model MacBook Pro 2011....it is maxed out at 16GB ram and I replaced the spinning drive with a SSD (this breathed years of new life into it).
It served me well for a long time, but when I worked with it, It really mostly was a workstation as that I rarely unplugged all the external drives, Wacom tablet, old IBM style loud buckling keyboard, and at the time decent Dell U2711 monitor.
This past year, I bought a Mac Pro and the MBP now has been relegated to my tether capture computer for the most part. I bring it into my "studio" (used to be a formal dining room)...and shoot in there. I"ll then usually bring it back to office and plug back into the ethernet cable and move the images to my MP.
I'm experimenting with Capture One since it tethers with different cameras (I'm now not just Canon)...but while it tethers well, and the color management seems to REALLY be great, I do miss a lot of the functionality I have/had in On1 RAW for my DAM. So, I"m still trying to reconfigure my workflow.
All that being said, I rarely if ever actually did much photo work ON the laptop as a laptop as in as a portable device. I prefer a real keyboard, ,mouse and Wacom tablet for my photo (and video) editing work.
That being said, I have done a few things, on my now older iPad Pro 10.5"....using Affinity Photo and while it was mostly stuff to just goof around and learn on while in airports and neighborhood pool (I miss that, damned virus)....I did find it to be VERY powerful.
I did like 20-21 RAW image focus stack from my 5D3....and it did an amazing job in a very decent time!!! I was shocked to tell the truth.
But so far, I've not really found myself as comfortable with a mobile photo editing solution, I prefer the large screen (especially with older eyes) and all that a full desktop set up offers....and with the newer, more powerful desktop computer I have now....I click a button and it is almost done before the button clicks back up again.
C