Thank you for an interesting article.
We found some knock on effects from the above in the sense that our public website on SharePoint under office 356 suddenly lost its mobile responsiveness. We have been in contact with Microsoft about this, no solution found so far, so it seems that we will need to move and host our site in a different location sooner than later.
I did read another interesting article on your forum about the shutdown of the public site in 2017, so sooner or later we do need to move anyway. But all in all I agree with the above information is key, if you provide a service then your customers do depend on you. Thank you for a good forum and keep up the good work in giving us good information.