Idk about it being locked in. I have seen people with Sr and Lead titles interviewing for a lower position these days. Those things don't always stay with you the rest of your life. But titles are cheap. Salary, bonuses, and stock are money.
For me, I had considered job offers with higher salary. But then when I looked at the salary and reduced PTO I realized my hourly wage didn't change that much. When I factored in the stock package and downgrade in 401k match these 10%+ percent salary increases put me behind near term (near term being about 3 years until the new company started to vest and become regular earnings).