It's at both the artists and the publishers discretion tbh, it's easy to forget that "drawing gay cartoons" doesn't make you a ton of friends in a conservative society lol. There might be no one "requiring" the censor at all, and it's just a decision to keep the boomers higher up from crying.
Lily Club is also Bilibilis in-house publisher for GL series specifically, so whatever rules may apply to a Lily Club publication like this may not apply to PBMMV, which was not published under them, even if the parent publisher of both was "technically" Bilibili. Does it make sense? Not to me, but it's why you can have a chaste kiss blocked in one series and straight up deep kisses with hickies and breast play being allowed in another (Childhood Sweetheart Liaoliao)