You'll have to pardon me if I'm skeptical of people who present anecdotes as if they were data. But, even giving the benefit of the doubt (which I have no particular inclination to do), I feel like it begs some follow-up questions, because I don't take it as a given that those are actually "multiple" reasons: "Some are on to other stuff..." What they moved on to isn't important, but moving on to other stuff is not a reason, it's an outcome. Why now? What's changed between when you were watching and now, that made you decide to move on? "LeBron is a turn-off." So, does that mean that they haven't watched the Finals since 2010? And, if they have watched the Finals in the last decade, what's changed? It's not like LeBron just started being LeBron, this season. What's LeBron doing now, that he wasn't doing, say... five years ago?
But, all that aside, saying that there are "multiple reasons" why people stopped watching is a tautology, and tautologies are only good answers for people who like tautologies: it's making a declarative statement about something, that does not have to be pointed out to reasonable people, because it's self-evident. The only people who need to have it explained to them that there are multiple reasons why people aren't watching are the people who think that there is a singular reason why people aren't watching. Which is, to say, simple-minded people.