(Hot take) don't think grinding 500+ leetcodes for big tech isnt necessary

A lot of my friends who work at big tech (or even a few quant) did less than 300 leetcodes and got in internships & grads for companies everybody knows - but they memorise the solutions & key

A lot of my friends who work at big tech (or even a few quant) did less than 300 leetcodes and got in internships & grads for companies everybody knows - but they memorise the solutions & key points of almost all the questions they've solved, and if you memorise the solutions for 200+ classic & wellknown problems there's a very high chance you know the exact problem when you're asked in an interview. I also followed this strategy and I also got an offer for big tech - what are your thoughts? Happy for discussions