I mean kinda, someone who has been following web development since jQuery and MooTools is going to grok everything way better than someone who is standing today looking backwards, gazing into the labyrinthine nightmare that is the modern JS stack. Either you were around for when each part was introduced and it was a gradual descent into madness where the next step was a natural progression from the previous, or you weren't and now you're in the center of the maze without a map and in your mania you desperately try to invent higher level primitives and metaphors that let you reason about... well anything at all.
But they're all falsehoods that break down eventually and require an elder or time spent with the sacred texts to achieve enlightenment. Repeat the cycle and you get a senior dev in <something: webdev> whose skills are only kinda transferrable to <other thing: CLIs> and you must start your journey over again.
So you have arch mages in webdev who are a acolytes in systems and the only way they'll progress to is write a lot of bad code. I'll get there eventually but how long it takes is dependent on how many opportunities I get to cut my teeth on stuff that requires a more complete understanding.