Mac is not the only game in town, and you will pay a premium for going that route. There are plenty of good options for "just" photo editing and you can save a decent amount of money by going Windows. Memory, however, is your best friend, combined with a decent processor and a fast SSD.
If you are already a Mac user and are OK with the cost, I would recommend staying with a Mac. If you are looking to save some money and are comfortable with Windows (or willing to learn the differences) then I would compare some other options.
All my Macs also run Windows with Bootcamp, which makes them much faster for certain specific tasks (massive convolution in audio processing, for example). For other tasks, Mac OS is faster.
Said that, two years ago I made the "error" of abandoning Apple for MSI, purchasing a very powerful "gaming" laptop. I needed a top-level Nvidia card for doing some work about virtual reality, running a Windows HMD (Samsung Odyssey+).
Problem is that this MSI GS65 lasted just one year. I replaced it with the newer MSI GS75, featuring a very powerful Nvidia 2080 card. But again, in less than 12 months, it started literally" breaking apart".
As I had just got a new EU-funded research project, I had money enough, so I came back to a Mac.
It is another world. Reliable, stable, and everything simply runs smoother (PARTICULARLY UNDER WINDOWS!).
The AMD video card is not as powerful as the previous Nvidia one I had on the MSI, but still works well with my Samsung HMD, and also with the new Oculus Quest 2.
So I think that Apple is still worth the additional money you pay, you get it back in quality and duration.
My wife is still using her MBP-15 mid-2012, the last one with antireflective screen and user-upgradeable disk and memory (and Nvidia card). She has now a nice 4-TB SSD (Samsung) and 16 GB RAM, and after 8 years that machine is still working very well. No Windows laptop of the same age is still fully operational...
