Thinking a little more about it, I see other reasons for the success of the comic in this platform as it relates to its nature.
First is how the comic benefited from being associated with Minotaur Hotel. The game's fanbase is composed of dedicated users that are spurred by its creators to use exclusively itch.io for both interaction with fellow fans and devs, as well as obtaining the visual novel itself. What that means is that (what are likely) the first "fans" of the game here were people that were knowledgeable of the platform and eager to engage with and share it.
Secondly (which I personally find most interesting) is the comic's characters and art. Should one go to the front page of itch.io's comic page and filter so only those with the Gay tag show up, they will find a plethora of "pretty boy" and "anime" archetype stories or artwork. Such, of course, is not a deterrence to their success, but if one "cross-references" with MinoWorkshop's Furry Visual Novel Audience Survey, they will find an overwhelming bias towards "manly" or buff (Bara) men in their content. Of the comics found in said comic page, few seem to cater to such demand, except BBD; the only large exception being comics by prolific furry artist Maririn however most of them are priced. Granted, said survey was aimed at VN consumers. Combing further with free and adult (erotic) tags, and one should pretty easily notice the void this comic superbly fills.
"Then, this comic ain't that good and only thrived through its circumstances?" Not so. What has been said so far only relates to the success found in this platform. Speaking as someone who actually stopped checking the comic here because I became a patron, I can attest to people enjoying it regardless of itch.io and even Minotaur Hotel.
I'm obviously a fan of this artist and comic and I do believe wholeheartedly the success is deserved. Thought I'd share these observations I realized reading this.