Maybe because unlike in the Hoyoverse case here they have a better console game designed for console and this one is designed for mobile, and being a shooter to merge mobile and console in PVP wouldn't be fair. And well, they may not want both games to compete against each other.How does this not have a PS port? You would think after the success w Hoyoverse mobile game releasing simultaneously w mobile that PS own first party ip would release on PS4 & PS5.
The genres of Hoyoverse are more slow paced and require less precision and skill when playing, so can be adapted and merge better both versions, could even make PvP between both versions.
I assume in the future after Destiny 2 and this game, maybe the next one will be designed to be properly played in both versions.