Is this a serious question? You think SpaceX developed the industry-leading orbital rocket, launched hundreds of times to deliver thousands of in-house developed satellites utilizing homegrown, novel argon gas ion thrusters, to develop a global satellite internet system using inter-satellite laser links, their own in-house developed, incredibly inexpensive phased array antenna system, and everything else, and they forgot to use TLS?
OP was likely referring to this[1] which did in fact have lines like "tesla isn't encrypting their firmware and it's really easy to glean information from the vpn with a packet cap because nothing inside the vpn (was) encrypted".
You don't need to be a rocket scientist to see that the sole provider, globally, of a reliable, reusable, orbital launch platform--also a proven heavy and in-development unprecedented super-heavy--is industry leading. SpaceX is at least a generation ahead of not only every other commercial competitor, but also every national space programme the world over.
Who else would be industry leading if not for SpaceX? Genuinely asking, I don't get how a source would be even possible for this. Do you mean in terms of launch? Satellites in orbit? Because they are leading both of those by far
