Have you ever hired in tech ? Good engineers are hard to find, that’s the reason companies pay for their stuff and family to move across the world.
Because we invented millions of arbitrary reasons to disqualify a "not-best" engineer like their coding syntax, the editor they use, stack they aren't familiar with etc.
It's gatekeeping, the people on the inside are learning on the job and googling instead of constantly cramming for an algorithm test. Three weeks ago none of you knew the new framework you're now using. The successful candidate will be neck-deep in your bugs for a long time.
But yet and still, even if all they need is a bog standard React developer they still want someone who spent hours studying leetCode so they can reverse a binary tree on a whiteboard.