Of course, leave it to Trump to speak on something he doesn’t know much about. Players and championship teams not literally invited but instead carry on the tradition to go meet the sitting president. In many occasions, the team or champion would present the president with a gift in signs of respect.
Finally, the White House is the people’s house. People can come to the White House for tours with no invite. The president does not own the White House, it’s a temporary home, not the Trump Towers (thank God).