The last time I got hired into a startup with options, they didn't tell me what percentage of equity the options represented, they just said, "You get 50K." I didn't even ask for any more details because their choice to give numbers instead of a meaningful metric made me think to myself, "OK, so I'm deciding whether to take this based solely on salary, and anything else is just a future bonus, not a deciding factor." I did take the job, but never banked on the options.
To me, failing to give you all the information isn't a deal-killer on a potential job. But it should flavor your approach to the job, and help you decide exactly how committed you are to the work.
I never even think about options. They're a non-factor when deciding to work at a startup or any company. I don't even know why they bother to give them out. As an alternative to tiny options they could opt to give people a bonus on acquisition or IPO or find some other incentive to keep talent. I'm honestly more interested in 401k contributions.
To me, failing to give you all the information isn't a deal-killer on a potential job. But it should flavor your approach to the job, and help you decide exactly how committed you are to the work.