Well enough -- the writer wants GamKarDave, the writer gets it. So what's the in, you ask? I say, the whole fandom gets this wrong. They're thinking human, they're thinking of the way Karkat cries when his people get hurt and that 'no sloppy makeouts' memo, so they think Karkat would try to stop Gamzee, control his black romance, and keep him away from humans at all costs.
The fandom is completely wrong. Karkat's a troll, raised on troll romances his whole life. The happy ending doesn't come before everyone gets _both_ concupiscent quadrants filled, and here he is moirail to a highblood with _neither_. He'll be filled with his memories of troll comedies like "In which a hapless indigo subjuggulator has killed every troll he feels black for and, at nine sweeps twenty-three perigees is going to be culled unless his sassy lowblooded moirail can negotiate a red-black flip with his matesprit, whose own passion has been waning due to...." Sure, there aren't any drones any more, but the culture is still alive, and it just doesn't feel healthy, sane, or moral for a troll to ignore their caliginous quadrant. Karkat's clearly letting Gamzee work things out for himself in his flushed quadrant, but he'd be the one out scouting the group for Gamzee's other partner.
Then comes the second part -- making sure Gamzee doesn't kill a potential kismesis. Gamzee would have destroyed most of their group in a straight up fight. I wouldn't give anyone but Feferi, Eridan, or Aradia odds against him -- Sollux would lose because Gamzee would wait till he was down and open him like a banana -- so Karkat is already aware of how important it is to find someone who intrigues Gamzee as much as they disgust him, someone who would value Gamzee and push him, but never betray him. Someone, ideally, who challenges Gamzee to grow beyond his limits and who'd move the battleground from slaughter to something survivable.
If Karkat happened upon Dave and Gamzee in a slam poetry battle, or found the best slam in all paradox space in their logs, he'd be crawling all over Dave trying to pull him into Gamzee's claws. From there, getting Karkat into the bed ought to be a breeze.
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The fandom is completely wrong. Karkat's a troll, raised on troll romances his whole life. The happy ending doesn't come before everyone gets _both_ concupiscent quadrants filled, and here he is moirail to a highblood with _neither_. He'll be filled with his memories of troll comedies like "In which a hapless indigo subjuggulator has killed every troll he feels black for and, at nine sweeps twenty-three perigees is going to be culled unless his sassy lowblooded moirail can negotiate a red-black flip with his matesprit, whose own passion has been waning due to...." Sure, there aren't any drones any more, but the culture is still alive, and it just doesn't feel healthy, sane, or moral for a troll to ignore their caliginous quadrant. Karkat's clearly letting Gamzee work things out for himself in his flushed quadrant, but he'd be the one out scouting the group for Gamzee's other partner.
Then comes the second part -- making sure Gamzee doesn't kill a potential kismesis. Gamzee would have destroyed most of their group in a straight up fight. I wouldn't give anyone but Feferi, Eridan, or Aradia odds against him -- Sollux would lose because Gamzee would wait till he was down and open him like a banana -- so Karkat is already aware of how important it is to find someone who intrigues Gamzee as much as they disgust him, someone who would value Gamzee and push him, but never betray him. Someone, ideally, who challenges Gamzee to grow beyond his limits and who'd move the battleground from slaughter to something survivable.
If Karkat happened upon Dave and Gamzee in a slam poetry battle, or found the best slam in all paradox space in their logs, he'd be crawling all over Dave trying to pull him into Gamzee's claws. From there, getting Karkat into the bed ought to be a breeze.