Is it really hard to cait over 2.5 AS?

So, I've been reading a lot of people saying stuff that the skill ceiling would be too high or that the average adc main can't kite over 2.5 AS, but as someone who's been playing since when lethal tempo was good (I miss twitch), it never felt too hard to kite with a lot of attack speed.
What do you guys think about it?

edit: misspelled kite :p