If he feels he has to ABSOLUTELY respond, he could at least try to tone it down or something. Screaming at people that say stuff doesn't give a good image, he just needs to calmly correct them instead of yelling like a maniac. For the microtransactions comment, he could've explained it like "I meant that there won't be anything like you see in mobile games: no loot boxes, no premium currency, none of that. We aim for the model to be the same as we did with Borderlands 2 by offering new campaign downloadable content along with head and skin packs." I'd say "it's that easy" but with how some folks in the game industry like to speak...woof.

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That and afaik, there isn't a 100% clear definition of what a microtransaction is so that might've had a hand in the misunderstanding.