I don't work in Publishing, and nor do I use the comment feature on Word (much).
But I think this is a bad idea. Specifically the Notifications. If I submit a document for comment, I don't generally need to know every time someone comments on it. As long as I get notified when they have finished, I can check the comments myself.
In fact, I think this whole notifications idea needs re-evaluating across the whole of Office 365.
I am currently working mostly remotely. As a result, and due to the nature of my job, I have to work on Multiple devices, and use Teams on most of them. Until I found out how to disable them, I was being flooded with notifications. That annoyed me. After all, I can get dozens of notifications each day, a large selection having little to do with me. Multiply that by the number of devices used, and I could get hundreds of notifcations. To make things worse, on a Mac at least, I frequently got notifications even though I was running the app, and actually doing something in it.
I've disabled notifications everywhere I can. The fact I could do that was not immediately obvious, due to the less than logical UI used by Teams.
Although I don't like them myself, I don't object to notifications as such. They can be handy, but I think the default should be to ask each user *if* they want them , rather than assume they do.
Admittedly, I am not familiar with the Office 365 admin console, so the notifications defaulting to on may be something decided by my company's system admins, and I could be unfairly blaming Microsoft..