I'm confused what you're getting at here. $5k/week is $260k/y (or a bit less counting vacations and holidays) and the fully-loaded cost of an engineer at a startup is typically more than that. Then consider how high opportunity costs typically are at startups, and I expect most startups would view your spending a week to avoid a one-time $5k expense to be a bad tradeoff.
I agree, most startups would view spending a week to avoid a one time $5k expense to be worth it for several years at least. That's why I'm saying the experiences are different.
If you're reading a judgment into my comment, there is none, I think doing super constrained engineering is super fun and an awesome skill to have. But I have also worked places that have the attitude of time being vastly more valuable than cash, and respect that both approaches are reasonable. Just different. But worst is when you're cash constrained to the point where even your clever workaround isn't possible to implement, even though it costs 10x less and is mission critical.
Sorry, what I'm saying above is that I don't agree with that.
I am also thinking more "angel+bootstrap+grant" funded startups rather than people already past a Series A; if there's 10 employees with a decent runway the calculation changes a lot versus 3 people getting something off the ground. I think the latter is more typical of a startup for the first several years.