[Someone]

Depends on how hard you need the job and how you tell it.

If you see the interview as on equal footing (they want to learn whether you fit the job and company, you want to learn whether the company and job fit you), you can be a bit critical.

You can do that without being negative, though. Knowing of a rough corner in their startup, you can ask “How did you avoid running into Foo?” or “how did you find time to move to 100% TypeScript?”.