Logically speaking, ‘A or B’ means ‘either A, or B, or both’, so I’ve actually answered your original question adequately. However, I’ll not nitpick and will gladly indulge your request for more examples of the phenomena described above, since it can actually provide some insight into the aforementioned players’ mentality and be very relevant to the topic.
In Mercenaries, for instance (it’s one of the game modes, apart from also Classic, that I actually care about at this juncture, so perhaps I should speak of what I know best), there is an achievement which requires to do a quest of a sort (Elise’s quest for the Golden Monkey, comprising a sequence of abilities to use) in the PvP mode (the so-called fighting pit), giving a cosmetic reward, namely a portrait for Elise as a mercenary, desired by many players. While it can be done in a perfectly competitive and viable party (I’ve done it many times), some players would just attempt to do it for the achievement (by the way, so did I initially), since you don’t even need to win or anything to fulfil the requirement for the reward, with a hampered party focused solely on this objective. I’d say it’s often quite obvious what your opponent is trying to do in this case… meaning you could just let them do their quest for the achievement, then win your match… right? Well, wrong: not only will you highly likely meet zero cooperation with such strategy, in fact, some of these netdeckers and their ilk (speaking of which, although this part is pretty self-explanatory — especially in modes that are supposed to be for fun only… I remember having touched Casual years ago) would concede just to prevent you from doing this quest, even though they would actually win without much trouble and get their farming objective. Losing intentionally (and thus forfeiting one’s own rewards for the win) just to meddle with someone’s doing their quest — this is definitely not trolling… or is it? Of course, I’m not even talking about attempts by some people to go with Elise solo instead of a full party of six mercenaries, which would send a clear signal about what they’re up to — but no, netdeckuhs smell blood, netdeckuhs smash!
You know, I’ve been in this game since open beta, having quit somewhere after Un’Goro’s launch, returned for Classic when I learned that it was a thing and subsequently stayed for Mercenaries. If all my experience with the bulk of players with some — rather rare, I must say — exceptions has taught me, it’s that you’ll sooner find a chaste person walking the streets or a vegetarian white shark than a decent person as your ‘worthy opponent’, especially when it comes to the subject (trolls, losers and netdeckers, among others, however — that’s an entirely different story). Before you ask: yes, most of the time one can tell by the deck etc, yes, I’m that good at behavioural analysis 
, and no, I don’t care about feeble objections of the aforementioned categories.
PS
If memory serves, this part was not present when I started replying to that post, or at least I don’t remember having seen it. This is a prime example of rather crude argumentum ad hominem… And perhaps even a fitting illustration of the points raised about certain player categories.