Funny interview at a startup

I recently got an offer from a seed stage startup for a SDE2 role. They shared the offer in a 2 liner mail. Weirdly enough they have a probation period of 3 months which could also be extended to 6 months during which there'll be no paid leaves, nothing, and you cannot be late to the office any day. I asked them to share the detailed offer letter with all these verbal probation clauses penned down and they've not replied for a week. After getting the offer, they asked me to submit my adhar card, pan card, 10th, 12th marksheet, graduation certificate, passport, birth certificate, payslips, previous offer letter, resignation mail, proof of bonuses and all sorts of documents. It's funny how they think trust only works one way. I've withdrawn the application as there were too many red flags during the entire process. I really wish the Indian corporate system had an open culture where trust is bidirectional and not act like we're at the mercy of their job.