For consumers Flow is great to automate their own stuff.
In a global company environment it's a mess. Everyone can use Flow, gets a free license and can also apply for a 90 day trial license. An O365 admin has absolutely no influence who can use Flow.
The license assignment is just cosmetic to display Flow in the application launcher but has no impact at all.
This needs to be changed, without a license no usage of flow.
Seems Microsoft has other interests. Everyone is free to use whatever they want.