Sure we can add you on there. I see there's another post with a pending request, did you want to work together on the community @Rat_in_a_hat@lemmy.ca ?
You can totally have the community and build it up, but for some context on why it isn't active currently:
From memory, the r/onguardforthee mods set up the community here during the API migration, but did not have the capacity to keep it going alongside the subreddit. Since !canada@lemmy.ca covers much of the same content, and we don't have the history that r/canada and r/onguardforthee went through, there hasn't been that much demand for that community. We also have some existing communities that fulfill the sub-niches, such as !ehbuddyhoser@sh.itjust.works for memes or communities like !ndp@lemmy.ca for political party specific content. You can see the sidebar in !canada@lemmy.ca for a list of those.
You're welcome to take over the community and build it in a way that makes sense to you. If you wanted a connection to the subreddit (ex. sister communities), we might be able to put you in contact with the subreddit mods