Keyboard and mouse for FPS is a requirement for me, which leans towards PC. Although I think you can get them for consoles also now, so theres that. It's also easier and cheaper to get a high refresh rate monitor for a PC then it is a TV that does the same.
So PC still, although console FPS is better then it ever has been.
For a run n gun spray n pray kind of melee shooter, a console should be playable. But if there's much accuracy or even precision required, then mouse & KB are essential.
I didn't realize you can plug KB/M into a console these days—I assume only on the latest PS5 and whatever latest ridiculous name Microsoft chose for theirs… is it the X-Men Are You Serious B-O=X?
That's nice, that making consoles more like PCs is continuing in the latest gen. Once cloud gaming takes over, decent input devices are all that'll be needed.
So PC for me for shooters—and other genre too. I prefer desktop to laptop since I can always put a blindfold on at desktop, whereas there's no way to make laptop action visible. Plus I love my 2 x 42" TVs as monitors—much cheaper and easier to get than similar-size monitors—makes it so easy to pick which nostril I want to put the bullet in, from 500m.
If you are good at strategy, but bad at shooting, play on console for sure. If you are good at both or just shooting, play on PC. The better you are the more advantage the mouse gives you. A lot of people on PC would be more competitive if they switched to console.