A new setting available in Teams meeting policies allows Office 365 tenants to have per-user control over who can present at meetings. You might want to do this to stop guests presenting. or to limit some people from inviting others to present. I’m not quite sure what the use case is, but no doubt some people will find great value in the new setting.
Microsoft Teams now supports roles for meetings. You can assign the presenter role to specific participants, who then have rights to present and other actions, like recording the meeting. Everyone who’s not a presenter is an attendee. These folk stay nice and quiet and listen to what’s going on and all the good information shared by the presenters.