If you're not a FAANG engineer, and like 95% of people work somewhere that doesn't give you a ton of stock or RSUs, and you don't live in a super expensive metro, $100-150k is basically strong mid/weak senior money. I know plenty of places hiring with no stock, no bonuses, and seniors top out at $160k or so. They hire capable engineers no problem.
With that in mind, taking a pay cut into the middle of that range to do your own thing and potentially make a lot more isn't as drastic as going from a $400k FAANG job to a $35k ramen-every-meal situation.