Nowhere in the post does it mention the author asking anybody to do any work. Their coworker showed up asking questions about something they're working on.
It sounds like the coworkers don't care about this project, though:
> You've mentioned it multiple times in different venues with very little uptake from the rest of the team. It's pretty clear they are more concerned with other things.
That's ok, and happens frequently. "I don't have time to fully comprehend everything that's happening over there, but COWORKER is handling it and I don't see any obvious problems with their approach. :+1: and moving on".
Maybe some teams don't work this way, and require more direct participation and signing-off from members, which is fine too.
> You've mentioned it multiple times in different venues with very little uptake from the rest of the team. It's pretty clear they are more concerned with other things.