Trolling for sure happens, though it is usually easy to spot especially on Parler. Their slavish devotion is begging to be trolled and they bite very often. The memes for sure are easy to spot because most of the Parler Nuts memes look like something made in Microsoft Paint unless it was stolen from Twitter.
You make the same mistake my dad makes when I tell him about this stuff...you assume these people act normal and use logic in most facets of their life. They don't. The reason they are so easy to dupe is they assume everything that doesn't match 100% of their belief structure is false and should be ignored. They are the crowd that would burn down a house to kill a spider. There is no baseline common sense because there is nothing except whatever is right in front of them that makes them feel good.
To them the GOP is not what they care about. They care about the people who will echo their grievances. To them Trump is a God because he says the same things they say and he lives the life they want to live. (Mitch McConnell is no one to them because he is part of The Swamp) They don't see his flip flopping on issues because the past is ignored only the present matters. The Cult of Personality means only the loyal deserve to be supported and not believing Trump will prevail somehow is treason in their mind. They don't even realize that many of the people like Lin Wood are grifting them to high heaven too because they so badly want to believe they will do anything, spend anything and say anything. The amount of Trump loyalists selling crap pretending the money is going to help fund the coup is sad and hilarious because it works. Hell a fake Trump account does it all the time on there.
Parler is like a bunch of children who believe Santa is real. (spoiler alert...he isnt!) It doesn't matter that there is no way the whole thing works, kids believe it because the people they choose to trust tell them it is real. They aren't going to look into the facts behind it...the milk was drank, the cookies were eaten and the gifts they asked for are under the tree! That is all the proof they need Santa was there! Think about that the next time one of us posts some Parler stuff and you will see it very differently.