The label can be useless, I agree, which is why I try to limit my use to certain contexts where its use makes sense or can be inferred correctly.
I do think we should limit its use to something of a legal term, as I tried to explain elsewhere in the thread: https://news.ycombinator.com/item?id=20879152
Microsoft, Google, Apple, Amazon build databases, programming frameworks, hardware, operating systems. "Tech platform vendor?"