That's great, and I'm in a similar situation myself. But your intro mentioned this being early career advice, which could mislead people into making pretty big negotiation mistakes.

I would consider that a good advice for anyone who is half-decent in current market.

Good Engineers are at the value of gold. Can save you a lot of money down the road.

I have like 8y of experience and salary requirement is the first thing I negotiate. Easy 30-50% jump each time in past few years.

Definitely negotiate, but the first rule of negotiation is to never be the first to give a number. And the 2nd rule is to always have multiple options that you'd consider.