I think you're right. I also know technical people who obscure gaps in their own knowledge with jargon. So clarifying questions that might expose the gap are responded to with increasingly technical rambling. Bad habits all around, feeding off each other.

Increasingly technical rambling is good. What I hate is when techies start to imply that whoever they talk with is an idiot after they reach limit of their knowledge. That tactic is used surprisingly often.

It makes people scared to ask and passive.

No he means increasingly technical rambling that is also meant to obscure the fact that they don't know the answer. Definitely not good.

True, but one-sentence explanations can be helpful for managers and PMs that aren't familiar with the specific tech stack to get up to speed quickly.

I don't think this is a bad idea per se, but I do think that it's got a long way to go before it's really useful (or even correct).