He's a supposed professional and should act like one.

Won't be missed.

Precisely.

Will you're good friend David be paying him for the rest of the season?

I'd imagine that the contractual obligations are in discussion, which is why it's not been announced on the Broncos website.
I was quite impressed with Richie, he certainly seemed to want to do a job, and I'd like to have seen him playing and more importantly leading.

Maybe he has. Maybe he hasn't recovered fully from his injury and has taken the option to call it a aday.

Richie Mathers is now Player Welfare Officer for Warrington Wolves, how does that square with his ban?

Don't bet as I (allegedly) bet?

Welfare could be seen as what the players get up too away from the club, not sure how the RFL would view that in being involved in the game.
I would hope that he could not start in his role until his ban was served.

Yes, that is how I see it.

That would include betting shops ...

Yes it could, what's your point