Do you think the 9-9-6 work culture is right?

Yesterday, I came across a job posting from a specific SF company that offered Yesterday I came across a job posting from a specific SF company that offered a salary of 250k – 1M (including equity), but realistically, I don't think they have that money; they're just grinding to satisfy investors and succumb to too much hustle culture.

Requirement: be available on-site from 9 AM to 9 PM 6 days a week in the office (and I bet even Sunday would be dedicated to meeting some team members in "free time"). In addition, they were willing to hire those who would relocate to SF.

I applied for this job as a joke and was supposed to book a call with someone from the team in less than 2 hours. The fact that it happened on a Saturday night just indicated that they take their hustle culture seriously.

What's your opinion on this? (I won't name the company)

On the one hand, I found the enthusiasm of young people great (I understand that some are around 20 years old), but on the other hand, it seems very restrictive. I don't know how this work works in their office, but I don't think anyone can maintain high levels of commitment and focus for 12 hours at a time. So I assume that during these 12 hours of availability, they may not be 100% dedicated to work. So it may not be very productive and it takes away from personal time. For people who have their own company and a full share, I understand this workload, but for employees, I don't really understand it. Am I weird? :D