I understand it, but would have preferred some transparency. "Users: this is what we are planning. We know it's uncomfortable, but it's best because of _ and _

I understand it, but would have preferred some transparency. "Users: this is what we are planning. We know it's uncomfortable, but it's best because of _ and _. Please make arrangements now if you want your computer to continue operating as-is (without security or updates), because as of _, the OS upgrade will be rolled out automatically". The other thing to remember is that they made their own bed: they wanted to be able to sell users each individual "new" version of the OS, which created this mentality in the first place. Like the (currently) top comment wisely says: if you focus relentlessly on the user, all of this is a much smaller problem, because your upgrades are amazing, and users want to upgrade voluntarily.