I'm not arguing about this because it's very very very very simple. The budgetary people have given is zero indication that Marvel is coming to the East Coast Disney parks.
Point being that we don't know what the content of the $2-3B renovation of DHS will involve beyond "Star Wars and some Pixar". That doesn't mean nothing else is coming, just that we don't know any details. It's well within the realm of possibility that a GotG could be among the menu planned for the park.
In fact, I would argue that it's extremely likely that we'll get some content for DHS that not Star Wars or Pixar. I make no predictions as to what specifically will be used, maybe Muppets or Disney animation or Indiana Jones. Or, yes, maybe even Marvel stuff that is available for WDW.