in Apex Legends you have way better and more advanced movement possibilities on keyboard and mouse... and it's not even remotely close either.
the single most critical thing is that on Mouse and Keyboard you can loot death boxes while moving the character, basically being able to dodge bullets while looting.
this is completely impossible on controller due to the way Respawn programmed the inventory controls on controller.
then there's tap-strafing which is more situational but also something that keyboard gives you an advantage at.
so no, you are wrong

keyboard and mouse in these games, especially Apex, gives you a massive movement advantage over controller simply due to the layout.
noone at high levels plays on controller because of the left analog stick, that is in fact one of the biggest downsides in switching to controller for these players.
and the players that did switch to controller from what I heard in streams etc. unanimously dislike moving with a stick compared to WASD because 8 directional inputs that are always identical is preferable to analog inputs that are always a little different.