> Wanting to finish school is a negative signal

No. This sounds like VC trash advice and very bad career advice.

Startup chances of success are <5%, and many of the factors are beyond your control. A degree is still relevant in being able to easily get interviews and secure jobs, in the >95% case that you do not succeed on the first try.

I'd only recommend dropping out if you see mad traction and revenue and you are on a trajectory to be famous enough that people won't care if you don't have a degree. If you're still a "nobody", it's a really, really bad idea.