If I'm understanding your logic correctly, I think it's flawed.
It seems like you're saying: if you choose to work for a startup rather than a bigger company, it must be because you think their equity is valuable, so you should prefer to take more of your pay in the form of equity if you can.
But there are plenty of other reasons for choosing to work at a startup.
You might have chosen to work at that particular startup because the work interests you. You might prefer startups to bigger companies because they have less bureaucracy and can do (some) things faster. You might prefer startups to bigger companies because there are fewer layers of management above you and so you have a better view of why you're doing what you're doing.
Even if you're only in it for the money, I don't think your argument is valid, though this is more of a nitpick: it might happen that a startup particularly wants you or at least your skillset and is willing to pay more for it than any bigger company you've found. You might think the startup is likely to fail, but still prefer being paid twice as much. (This is kinda nitpicky because I don't think this situation is super-common, unlike the other ones I mentioned above.)
It seems like you're saying: if you choose to work for a startup rather than a bigger company, it must be because you think their equity is valuable, so you should prefer to take more of your pay in the form of equity if you can.
But there are plenty of other reasons for choosing to work at a startup.
You might have chosen to work at that particular startup because the work interests you. You might prefer startups to bigger companies because they have less bureaucracy and can do (some) things faster. You might prefer startups to bigger companies because there are fewer layers of management above you and so you have a better view of why you're doing what you're doing.
Even if you're only in it for the money, I don't think your argument is valid, though this is more of a nitpick: it might happen that a startup particularly wants you or at least your skillset and is willing to pay more for it than any bigger company you've found. You might think the startup is likely to fail, but still prefer being paid twice as much. (This is kinda nitpicky because I don't think this situation is super-common, unlike the other ones I mentioned above.)