I've been using Macs since 2005 and my current editing machine is a 15" 2018 MacBook Pro: i9, 1 TB SSD. 32 GB RAM, Vega 20 discrete graphics..... It is positioned on a stand and connected to an LG 4K Thunderbolt 3 monitor, and I use the Apple BT Magic Keyboard and Magic Mouse II. For me this setup works very well and offers more flexibility than an iMac or other desktop. I can simply unplug the computer from the monitor and away we go.....
Apple is now in the process of making a shift from Intel processors to their own SOC (System on a Chip) and have released the first M1 machines, which are very fast and which have outstanding battery life. I haven't seen one yet, but those who have them love them. The M1 MacBook Air is based on the entry-level Intel MBA and is fanless, while the M1 MBP is based on the 13" entry-level Intel model. Both come with just two ports, which for me is insufficient since I use external drives fairly extensively for archving, storing, and working with my images and often have two external drives plugged in transferring files between them.
For editing, I am currently using DXO PhotoLab 4 and I also use Topaz Sharpen AI, Topaz Gigapixel AI and Topaz Denoise AI, with Photo Mechanic for quickly reviewing and culling images. My machine handles all of these easily.
It's been years since I've used a Windows machine, so can't really speak to that, but I will say that for me, Macs are excellent for editing images and doing other things as well. I especially appreciate the synchronicity among my various Apple devices (iPhone, iPad, a second Mac), which is useful for sharing data and images as well.