No, it's a terrible time to talk about it. Talk about it now and you're going to get emotion-driven reactions, and they aren't going to be what you want.
There isn't any time that would be less effective for your goals than right now.
Then no-one should be talking about anything to do with causes or wider issues. This page should then be nothing other than "this is bad, I hope everyone is safe". Instead we're seeing a lot of discussion and a lot of it is good - I think jacquesm in particular is doing a great job in providing context in a level-headed manner. The thing is, just because you start talking about it now doesn't mean you can't talk about it later. Or that you can't change your mind.
Also, it's like 'teen abstinence' sex ed - you can tell people to refrain all you want, but they're still going to do it. People want to talk about this thing as it's happening; they will find a place to do it regardless.
There isn't any time that would be less effective for your goals than right now.