capnnofapn
to add onto this
as a mechanic, sliding is a cancer in modern movement shooters.
the lack of mouse input required, completely destroys the viability of anything that isn't just spamming sliding/dolphin diving/whatever burst move option your game of choice has, why learn to airstrafe or ground dodge and aim when you can just hit one button and get the same burst movement without the tradeoff of having to move your mouse?
sliding in most games is designed to be a risky, committal movement option, and will force you into a long, laggy, clunky animation where your mouse movement is oftentimes restricted. as such, to get any value, you need to spam the shit out of it. this artificially reduces skill expression in 1v1s because of how linear your movement options are in and out of a slide, leading to a fights being dictated less by how good you are at dodging attacks and aiming, and more about how good you are at timing the game's animation engine. it feels like shit to play as and against, but its such an oppressively good option that you're forced to play in that way.
quakelikes on the other hand allow you to develop your own style of movement, it forces you to think about how you're moving, where you're moving, and why. you also have full control, requiring greater precision when aiming from both you and your opponent.
the unfortunate thing that isn't being mentioned, sliding feels really fucking good on console w/ aim assist, so it will continue to be shoehorned into every single fps game from now until the sun explodes.