I have heard it in the way that Claude uses it going way back. Since I have to use Anthropic models for work, and they use that term prodigiously, it's been added to the list of "perfectly fine phrases that have been ruined" to me. It's really frustrating too because I don't know what other phrase I would use.
I don't suppose you recall where you picked it up? I really am curious on this, regardless what all the downvoters happen to think. The linguistics that surface in the training mixed with the system prompts is really interesting. Annoying as well, but still interesting.
"does some heavy lifting"
You could use the word "important"