Prestigious would be - FAANG/Uber-adjacent/whatever-competitive-admission-company.

You might work at Amazon - that's fine - congrats. I'm saying that it's /more difficult/ to get there on average than if you had gone to Stanford. You're more likely to get overlooked for another candidate who has all the same credentials you do but went to Stanford instead of generic school.

Just because you did it does not mean that it's a completely level playing field.