Companies have the ability to make this option accessible or obscure, given the anecdote it sounds a lot like google was going out of their way to make it obscure and I'd suspect it was done for dishonest reasons.

I think it's fine to choose to use a personal device, but employee education around personal devices is very poor - no one sits you down and goes through your rights as a worker and companies benefit by keeping those rights obscure.

You can accept the risk if it's worth it for you and that's fine - but a lot of people aren't aware of the risks and their employer certainly won't tell them.