Possibly, I don’t think there is any way to know.
There isn’t any good quality historical evidence which proves his existence. There are significant gaps where he is actively missing from the record, which is suspicious. The historical consensus is based on inference, not actual strong evidence.
There is lots of evidence that 70 or so years after he was meant to exist, there was a significant group of people who very much believed he did exist, although we have no evidence that any of them ever met him. We can infer that these believers were unlikely to have existed if he hadn’t, their beliefs didn’t come from nowhere.
The problem is that this is locically no more sound than inferring that someone made up a very convincing story for their own purposes, spread it about, and people believed them. Given that we know people sometimes do this, and people believe them (Think Hubbard and Scientology) then I think either explanation is equally possible, and we have no evidence either way.
It’s like Socrates. No evidence of his existence, he may well have been a fictional device made up by Plato. The ideas expressed are interesting either way.
So yeah, all there is is opinion and hunch, and every person will have their own based on their own bias.