To add to that he is now violating their trademark by still using their name, branding and logo, all of which are registered trademarks. The copy you download still has all of these in.

Way to speed run wiping out trust in your product.

Any Wordpress plugin developer who relies on it for their livelihood should be EXTREMELY worried.

I don't disagree with that, but the comment I've replied to said they were stealing "what they had previously provided". The stuff "provided" was code shared under a GPL license.

Maybe it's a technicality, but the code is open source and you can do whatever you want it it, provided that you respect the GPL license.

There's a lot to criticise Matt for here, but you can't accuse him of stealing GPL code. Like, that's one of the points of that license.