I guess I just don't follow his logic - GW have ceased to support a game which he enjoys. He is angry and upset about this. I can appreciate that.
It makes little sense to not play GW games any more - that, specifically, doesn't hurt GW. It makes sense to not buy anything new from GW. But I can kind of see the idea - he doesn't want to even give them that much free advertising.
He HAS to know there are other people willing to play 8th ed - or other games with GW models. And that someone is going to buy models.
By destroying the models, he takes them out of circulation. He loses their value (he could have sold them) and no-one can buy them. So, people might buy from GW.
Basically, he has let go an opportunity to explicitly deny GW hobby-dollars.
And I don't see there is a lot of negative press here - "petulant man-child is so angry someone changed the game he burned nearly $1000!" That's all this is. Yes, he can say he dislikes Age of Sigmar - but he could do that without setting fire to stuff.
Right now, if someone asks him about GW or AoS he can explain why he dislikes it - but the instant someone learns he destroyed models and made a video about it to a heavy metal soundtrack etc. it causes raised eyebrows at the very least. Look at the responses here - very few people are saying "Yes, that was a reasonable action". IIRC, the most positive comment is "Yeah, it's petulant but ..."
People will just think he is a loony. That seems to be the prevailing view. This does not bolster any argument he makes concerning AoS. "That guy who set fire to his army thought it was terrible!" is not a recommendation for the opinion.
Exactly this. He has other armies which he is selling on ebay, but the druchii were his first love in WFB, and he couldn't let anyone elee have them. He explained in the video that he knows this is pretty extreme and silly.
So, HE admits it's silly. And "first love"? Very little painted for a "first love" army . . . unless this is just a stunt and he burned some semi-painted figures.