I respectfully disagree. There is a line that can be held for both to work. it just needs game data. The amount of information collected even in the Battlefield 2 days would allow for tweaks from patch to patch. They would do this for weapons and vehicles to makes sure they're balanced. Adding another variable to balance with an enormous arsenal of options is very doable.
The reason we don't see it is because game publishers/developers want controller player to have the advantage as they make up the majority of the player base (Warzone). While for games like Apex it's because they are trying to expand into that market.
To get a healthy player base you need cross play between platforms. So your option are to ask for it to be balanced and hopefully they will listen or keep trying to separate everyone which they are not likely to do.