Apologies on missing this yesterday. I would add that saying it is "boring" with regards to "stability" means I also trust that what I learned about it last year is largely still relevant today. May not be cutting edge relevant, but is unlikely to bite me by being flat out wrong.

"Boring" works in this regard because you are saying there is not a lot of activity behind the scenes on it. Most of the work is spent doing the "boring" parts of the job for most of us. Documentation and testing.