I've been doing it for years with no issue. Intuitively, the idea that muscles/joints require "priming" seems really odd and not very useful from an evolutionary perspective. Cats don't warm up when they jump 5 ft.
Form is the major thing. I have to get used to the exercise, remember good form, get used to the good form, before ramping up to heavier weights. I don't want to go heavy quick and have problems if I have more fatigue on a particular day or I am not concentrating. Honestly, I have never not ramped up, so I don't even know if I could do that, but I am not about to try either lol.
I don't think "priming" your muscles is necessary because it's an evolutionary advantage, but because that's the best muscles evolution has come up with so far.
It's like saying "why would I have to change the oil in my car, why would an engineer make an engine that needs that?".
And jumping 5ft for a cat probbaly is the priming, that's not peak performance for them.
