Pros
Fully remote work with brilliant people who you can bounce ideas off of. The culture is super transparent; what you see is what you get. If you enjoy autonomy & creative control, then this is definitely the place for you.
Cons
I thrive in an environment that has some ambiguity in it, but some people prefer full clarity and strict directions. Heads up, that's not going to be a reality in any startup. So again, it really depends on what you're looking for in your career.