I don't think that's true. I'm in EU and I've allowed engineers to shift their working hours based on personal circumstances - like start remotely at 7am and finish at 3PM. I also encourage engineers to take the time they need for life stuff - kids school run, doctor, physio, sick aunt, whatever - because ultimately we measure the outcome of their work, and not the sum of hours worked.
For the office space - do you mean popping into the office at odd hours, like evenings or weekends? I'd probably be encouraging my engineers to talk to me about why they need to do it and not enjoy their non-working hours. If the work is too much, we solve for that. If they're going all in on something they love, I'll want to make sure they're not on a path to maybe burning-out.
Americans really do argue for the right to be treated like dirt don't they!
I can assure you old sport, not being contactable outside working hours has nothing whatsoever to do with requesting flexible working hours. And quite why an employee would like to "use the company office space" (be in work!) outside working hours I've no idea!
No. The eye data is used to prevent people from claiming the sign-up bonus twice. It is independent from the key you'd use to sign transactions. Worldcoin claim that the data from the eye scan is hashed, and then thrown away.