What it appears we are doing is comparing anecdotal evidence, then. I posit that any user can browse through all of these forums and reach their own conclusions based upon the frequency of the stated events.
Certainly, in this forum, we can indeed find a few cases where a user tried to increase boot time. They are not a common issue and the worst that usually happens is that they lose access to their Grub Menu.
What we do is we inform users of what the Grub Timeout Style does and warn against them setting that value to 0.
We do not make it impossible or difficult to access grub file, nor make it to where they cannot modify it. Doing so would bring far greater harm because it would prevent the many more common issues that are correctable with a Grub Parameter from being implemented by the user.
Linux users take their lugnuts off the wheels to improve acceleration?
No.
It does not happen. Ever.
Do people modify grub? Yes. All the time. And harmlessly, at that.
In a few rare cases, some people make a mistake or do something wrong or have a typo in the grub file... and we are here to help. It is far more often that the user forgot to run sudo update-grub than it is that modifying grub broke their whole system.
In fact, I cannot even remember that last time a user broke their system by modifying grub. I can remember a great many where we needed to fix a parameter or correct a typo or run update-grub... nothing major.
Not to Shift Blame and not to tell people that they are inept and that they are not allowed to learn about their systems, tinker or modify.
Can you link to these Youtube videos that are maliciously telling people to remove files that do not even affect boot time? We have a thread for that: