It's nice to see some male friends in yuri mangas in a while, but.. it's only nice when it's an actual friend like the one from tamen di gushi, not this kind of disgusting and creepy man. I'm tired of yuri manga being consumed mostly by men and not sapphic women, it just shows how much men see us as objects for their fun. To the men in the replies: Sincerely, as a lesbian, I'm really tired of of you fetishizing us. Please rethink about what you're doing because it's gross, for god's sake!
I don't know why you felt the need to go this far over this innocent 4-page doujin, but I'll address it anyway.
At least for non-pornographic yuri, yuri historically has not been consumed by mostly men. A common misconception, but false nonetheless. Also, it's a plain fact that yuri manga is mostly written by women, and it's the creators who...well, create the content, not the consumers*.
Also, what was disgusting and creepy about this guy? He's just enjoying a mobile game with a friend, then someone else comes and tells him to back off because she likes that girl, and when he realizes that he just thinks it's cute. What, is he not allowed to be happy that a gyaru treats him like a peer and a human being? Is he supposed to be against a girl liking another girl? He's clearly a bit awkward, but since when is that a crime?
In closing: yes, fetishization of lesbians is a problem that exists. But at least direct your anger where it's actually worth having it.
*An inb4: There's an argument to be made that consumer demand will drive what content is created, and thus if sexy yuri is what sells it will be what is created, but there are issues with that here: 1, if that were the case, you'd likely be seeing more men drawing yuri manga than we have. 2, yuri isn't exactly such a thriving market that artists need to do this kind of thing in order to eat; they draw yuri because they want to.
Also well notably some of the sexy yuri are also made by women creators. There are women who enjoy sexy content, and women who don't. Just like there's men that are the same. I think the current Yuri market is honestly pretty even between sexy and wholesome content.
I also think sexy can be well written, and men can be involved. Sunstone is primarily a lesbian comic made by a man, and I at least believe it's generally well received by numerous demographics, largely because of it's character writing.