>RDP'ing into a computer with your Microsoft account is easier
Here is where it gets complicated, what you say is true for personal accounts and Hybrid Azure AD accounts, but it becomes super difficult with pure Azure AD accounts.
I haven't used pure Azure AD accounts from a management perspective before, and I've used it for less than a year as a user. However, I've yet to experience any sync issues personally. What kind of issues can crop up, and how?
You have to use AzureAd\john@contoso.con otherwise it interprets as a UPN and fun ensures. Just deployed 30+ Azure AD only devices in a clinic and that took some getting used to when elevating with UAC.
100%, and trying to train users that they need to add AzureAd\ to their login....
Also with pure Azure AD accounts you have to add each users permissions manually to each machine they need to login to since Azure AD groups don't sync down to each machine.(Correct me if I am wrong here, it could have changed since I last did a pure Azure AD install 3-4 years ago)
Here is where it gets complicated, what you say is true for personal accounts and Hybrid Azure AD accounts, but it becomes super difficult with pure Azure AD accounts.