I've never seen more casuals in the NBA than supposed "Heat fans" during the Lebron years, so I don't know what you're talking about. Overnight, random people in Toronto and cities I visited in the States were rocking Heat gear. shyt had me

And as soon as Lebron left,
nobody rocked that shyt. This is a big reason why people shytted on them. Heat fans were some of the most arrogant bandwagoners I've ever seen in any sport.
The difference now is that even though The Warriors/Cavs are the most dominant teams in the league, at least I'm seeing people be a lil more honest about who they support. Here in Toronto, people rock Raptors gear all the time now. Even though we're out of the playoffs. It's kinda hilarious but

at the same time. Lebron nutslupers continue to be Lebron nutslurpers, but at least they're more honest. They're not pretending to like The Heat or even be basketball fans - they're Lebron stans. And wherever he goes, they go.