@IAmTheMeddler You're only at a disadvantage if you put yourself in that position (Low refresh rate monitor/TV, higher ping due to living conditions, bad mouse &KB/controller, etc). Controllers have the advantage of aim assist which helps from short-mid range battles, falls off at long range. Pro controllers can help with their precision as well by swapping out extended sticks, they also have shorter button travel time to register their inputs. KB&M excels at precision, so they'll naturally win most times at long range battles and the user performance at short-mid range varies from person to person. I play Apex with a controller and KB&M. I came from Xbox with this being my most played game. I do think the aim assist is way too strong on console and better on PC, much more manageable. But they both have its pitfalls. Moving on....
I've played a few games with cross platform and they all allow consoles to swap to KB&M. If you truly believe that you're at a disadvantage using a controller then you should just use a KB&M. It's as simple as that, that's what I did on Xbox with Warzone. But this thought process is mostly psychological, every player is different and each can excel amazingly in their preferred play style. The only concern of cross-platform are PC hackers but that's an outlier.
The PC really needs the cross-platform, it's dead in comparison to console. The que times for duos and events can take hours, trios can reach long que times too at certain hours. Steam might bolster its playerbase but that's a band-aid fix. PC NEEDS proper cross-platform. I get instant ques in all game modes on console. If they do enable cross-platform with PC then they should give the console players a choice to opt into that play space, as well as enabling the option to use KB&M on console, COD allows this.
I swear, every single game that comes to this choice, people overreact before even trying it out themselves.