You are mistaken if you think that trolling and aggressive debate can be cleanly separated. See Schopenhauer. All of the techniques you mention, and more besides, are typical methods of argument or of rhetoric - regardless of the fact that they are rarely relevant nor elevate the debated subject towards truth. In fact it’s quite normal for people to engage in such fallacious forms of argumentation quite innocently, without even recognising that they are doing so. Being able to recognise and either expose or manipulate unwitting fallacy is a key troll method. Likewise, a troll may engage in fallacy if it draws out their quarry.
As for your old-mannish comments about the generation that grew up learning intellectual rigour on the internet, 'twas ever thus. Have you never seen a newspaper?
