Isn't this somewhat semantical? Boring implies a lot of the things you said, especially if it means your team's experience is largely pooled in a particular dev environment. Assuming most boring tech is ubiquitous, it's probably rare that your team, statistically, is deeply literate in some obscure tech - they most likely are experts in some definition of "boring".

TLDR; #1 and #2 are essentially implying the same thing.

insanitybit's point is that "boring" can imply those things, but it can imply other things too. If you have to bring the correct context to make the word make sense, and there's other contexts that could apply that don't make sense, the word isn't helping. You bringing the correct context is doing the heavy lifting.