I'm pretty sure this was very intentional and not a marketing blunder in any way.
It has long been a shtick of Alex Karp to be vague in answering questions where and how Palantir software is used.
I also don't think you can put Thiel and Musk, or rather Palantir and Tesla, in the same bucket here.
Tesla wants and needs to sell to common people. Palantir doesn't.