I agree that famous people should be followed by medias.
This sounds like an alien race called ‘The Medias’ have arrived on earth intent on following famous people. I think this is what you meant:
‘Media‘ is one of those words that always has ‘the‘ when it is used as a noun meaning TV, Radio, newspapers, etc. – combined!
On the other hand if you’re talking about the materials used to make a work of art, then that’s a different ‘media‘!
‘Media’ can be countable or uncountable. In its singular form it is ‘medium‘, and in its plural form ‘media‘. We never write or say medias.