That is a seriously difficult question to answer.

Since trolling isn't in the conventional dictionary I looked at I had to go to the most popular urban dictionary definition:

The art of deliberately, cleverly, and secretly pissing people off, usually via the internet, using dialogue.

One would have to say that digaran is doing the following:

?  Art - art is very subjective. I'm not sure if I am qualified enough in the art of trolling to answer that.

?  Deliberately - one could argue that he is doing it as a response rather than doing it for the Lulz. Probably deliberate.

☒  Cleverly  - I doubt that any of the people that accuse him of trolling would say it is done cleverly. So you'd have to admit that it is clever.

☒  Secretly - it isn't much of a secret that he is pissing people off

☑  Pissing people off

☑  Via the internet

☑  Using dialogue

But he will probably claim that he is counter-trolling.

https://www.urbandictionary.com/define.php?term=Trolling