A founder who eats in to savings and goes unpaid for two years is on an entirely different level of risk profile.
But yes, if your primary concern is job security, in general you should not be working for a startup, regardless of how many points you get.
Eg this is me explaining why I wouldn't work at a startup as I shoulder more risk and very very low chance at a payoff better than I could get at a bigco, and worse case you spend 5 more years at the big co and you can be getting into founder level payoffs.
At that point why even take a risk if there isn't a reward if you are a strong engineer. The only thing that makes sense to me is to be a founder, or go work a stable high paying job if you're able to.
This pay structure greatly limits access to very experienced employees for a startup.
Many of the payoffs I've seen for startups that did well for early employees put earnings on par with what I've done at a large company without the startup risk. And that's for the ones that do very well which is a low chance.
So in the end I personally would get a lot more stress and a lot less income to usually being equal in a great case.
So generally it doesn't seem that worth the risk, low control, and probably low payoff.
I'd actually be more likely to join a startup in some years when I'm financially at a retirement or FIRE point. But then it's like, working for a founder on their idea, and maybe the pressure to hold out for 5-10 years there for the actual payout.
Just my mental space around it.