It's misleading. It's not Marvel Studios, who handles the MCU, just Marvel themselves.
Edit: I hate taking from Wikipedia, but this does summarize it quite well:
"In August 2015, Marvel Studios was integrated into the
Walt Disney Studios, with Feige reporting directly to Walt Disney Studios chairman
Alan Horn instead of Marvel Entertainment CEO
Isaac Perlmutter. Marvel Television and Marvel Animation were left under Marvel Entertainment and Perlmutter's control."