I've said it before and I'll say it again: they think that any hint of reylo being canon makes their ship good, instead of realizing it just makes canon bad.
Exactly. It’s C@ptain Sw@n all over again. “Our ship is canon and therefore it’s better than all the other ships.” And maybe the canon status of a ship could be an indicator of its quality... in a world where all ships are equal. Unfortunately for r3ylos, we do not live in that world.
r3ylo as a canon ship does not make sense. For all the ship-tease TLJ did (and Ruin Johnson continues doing), it slammed the door on romantic r3ylo quite decisively. If r3ylo were to happen in TROS, TLJ would have to have ended differently. ESB had Han and Leia confessing their love and kissing. AOTC had Anakin and Padmé getting married. TLJ had Rey closing the Force connection with Kylo, visually portrayed by her closing a ship door in his face. One of those is not like the other two.
Canon doesn’t mean a ship is good or more valid. R3ylos would do well to relearn that lesson.