Lets look at the facts and not maybes.
Yes, lets.
Did the failo stop the hulk from getting out of car=YES fact.
Even Hulkenberg himself says he didn't know as he didn't try, as they're advised. That much is a fact.
With out the failo could the hulk get out of the car=Yes fact
See above.
The roll bar has always left space for the driver to get out.
Pedro Diniz would argue that, as would several others over the years (Wehrlein, even Senna come to mind).
Mags would have been slower getting out with a failo
Now imagine that upside down.
But I am glad the FIA are going redesign it.
Why would the car be upside down?
Off the top of my head the last fuel leak due to a crash was back in 1989 - 30 years ago!
The halo is not going to go away until something equally effective while more aesthetically pleasing comes along - that might be two years away, it might be twenty, but the tiny potential of a fire serious enough to seriously harm a trapped driver is massively outweighed by the safety it does bring, as has been demonstrated twice this year already.
You ignorantly ranting about it isn't going to change anything.