Modern Authentication SPO

Hey folks,

I like to know what to consider when I enforce modern authentication in SharePoint Online. Do I risk that some clients or applications are no longer able to consume SharePoint Online? Is it enough to monitor Azure Logs who is using legacy auth with some basic measurements like Jussi is mentioning in his BLOG POST ?

I like to hear your thoughts about enforcing modern auth in SharePoint Online in an organization.

Cheers Andre