This is the perception among many startups, but I think this is more perception than it is reality.
Exceptional engineers are several times more valuable to most startups than an average engineer, but almost all will hire an average engineer for $115k before they hire an exceptional one for $175k. There's no rational basis for this, but it is the path of least resistance. You won't need to defend hiring an engineer for $115k to cofounders or investors.
This is counter-intuitive, but the solution is to actually pay more for remote engineering jobs. When you do this, you're widening your talent pool to the entire world - and then you're selecting from the very top of the pool. We've been doing this for years, and it's been one of our most significant competitive advantages.