Please be realistic, the other manga creators really know they've to keep quiet (like you said earlier) to let the drama go away. It's a common sense of mature people that they won't quarrel like children. LOL
For example, Keishi Nishikida sensei, the Grapara's artist never reply any X, no matter they said good or bad things.
So, IN GENERAL, Japanese artists know how to handle online drama! You don't have to worry about them. LOL
It's only Airi Katsura (sensei) retaliated against others with lies and distortions. She's abnormal. LOL
Moreover, normally, the publisher always uses the editor to control the manga artist to keep their good image.
Kodansha is famous for (good) image control, unlike the others such as Shogakukan, Kodansha always solved the problem behind the public perception and never allow their artists to get into arguments with readers online if they're going to continue working together.
So, my die-hard Kodansha fan's friend said since the chapter 129 drama that Airi Katsura (sensei) might be axed prior to the chapter 129, so Kodansha let her ruined herself as she pleased because she'll not work with them anymore after Grapara and the volume 14 has been decided to be the last volume before chapter 129 was released. (We'll see whether she'll have a new work with Kodansha)
The fact that no one stepped in to stop AK (sensei) from behaving very childish might confirm the rumor she had been fired before chapter 129 is true. Notably, the title of chapter 129 is a wailing sex sound that clearly a dig at the publisher, Kodansha.
Even though the plots (chapter 132-134) was repeatedly revised in a chaotic attempt to negotiate with Kodansha to change their mind, the effort was unsuccessful and Grapara had to conclude as originally scheduled with the volume 14.
BTW, how about the Comiket? Did you spend time to see the real AK (sensei)?