Yes, that's very often the case with things that would very likely be shared if it looked good.

There are things that don't get shared out of principle. For example there are anonymous votes or behind the scenes negotiations without commitment or security critical data.

But given that Musk tends to parade around vague promises since a very long time, it seems sharing data that looks very good would certainly be something they would do.

And it usually is.

Are you familiar with the term "common sense"?

They say it ain't so common

It's a public company making money off of some claims. Not being transparent about the data supporting those claims is already a huge red flag and failure on their part regardless of what the data says.