Venues that do presentations or broadcasts would be another location where it doesn't make sense for the device to be tied to a user and instead be tied to the establishment/equipment. This would include stadiums, theaters, churches, etc. As such there are many places where this is undesirable at best and at worst a detriment.
While it may be a growing standard across devices it is much like those laws that just make it more difficult for those that are not breaking the law to do what they need to do. A simple check box to say "I don't need these notifications" would suffice and put the onus on the owners to secure their devices.
I've been in computing since the mid 80s and as such am fully aware of the needs for security, however having been around this long I also know that most times a 'one size fits all' approach rarely succeeds in providing what is actually necessary.
2FAs main problem is that even after various devices/browsers are trusted every update requires re-authentication and with turnover of handlers and management, constantly doing that becomes an onerous task. Even Apple's 'don't upgrade' option resets near weekly requiring constant attention. When dealing with those who are not super comfortable with electronics and volunteers it makes it that much worse.