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