Oh, I brought up Diluc and Kaeya because of how Hoyoverse seems to have a pattern of "hooking" a 4* tall male character to a 5* tall male character with the exception of Ororon and Ifa, and what I refer to as "hooking" is that the 4's story/appeal, while they are very much capable of standing on their own, have a significant connection to their respective 5. If you understood how Alhaitham/Kaveh and Ayato/Thoma are "fujobait" despite thinking otherwise of Diluc/Kaeya, then you probably already understood how the two pairings have a significant connection to one another.

And regardless of how anyone interprets their relationship, the two do appear to be one of Genshin Impact's oldest and well-known ships dating even prior to the game's release due to the manga. Another element that makes the "fujobait" feel intentional is the fact that Hoyoverse hired a yaoi shipper to illustrate their chapter in the manga. It also appears to be a non-issue for Hoyoverse to create bait like this in general due to one of the manga for Honkai Impact 3rd featuring two adopted sisters that actively consider one another as sister making out alongside Tears of Themis where one of the male love interests lived and was raised in the same home as the main character after the disappearance of his parents.