On one level, decriminalizing is a good thing, because if you don't decriminalize, it just continues anyway, but in the grey market. By decriminalizing it, by placing regulations around it, at least government gets control of this beast that's out there, and that people want, so to speak. It would also presumably provide revenue for government. It stands to reason that you have to have an appropriate regulatory structure, or in this case, that the provinces have to have an appropriate regulatory structure to deal with it.
I have not read the bill, so I don't know the details of what's being proposed, but in general terms, I favour sports betting becoming legal, so to speak, getting out of the grey market, and having proper regulatory control around it.