Just something to vent.
If you believe it's a joke showing, then take the joke. It's not meant to be serious (canon or not). It has no effect on Thanos. Also funny how in your own words, you're arguing about a joke.
And how does 'not being canon to the real Thanos' make any sense? Does that mean it's canon, but it's a clone (unsupported, like how you claim it's not canon because Marvel has overlooked it)? Or is that just another excuse to try and get people to believe you?
BTW, if it was a clone, it was a clone who had the power to enslave an entire universe... which means it's a little higher than real Thanos anyway... which again, does nothing to diminish Thanos in any way. Just hype the shit out of SG.