The whole Microsoft Office suite online just feels like hacky code on top of more hacky code. And combine with how your account can also be signed into your PC, and then also signed into applications. I have a work email, and two personal emails that all make use of Microsoft products. What a mess it is managing the accounts and the different systems. The business emails and accounts just seem sloppy and seem to work different than personal accounts.
Overall when compared to Google's suite of products, M365 just seems so sloppy.