^^A couple of reasons, at least for the Western audience. The anime is out during a stacked season, in particular fighting for attention against two high-quality dramedies that have the advantage of going full gay, meaning it doesn't get nearly as much as a visibility boost from it. The meat of the drama also doesn't seem to start until a good deal in, turning off both those that like it (who drop it early) and those who don't. This all compounds the traditional issues works in the genre already have with standing out. I believe a second season in a less crowded field would fare much better, letting it hit its strengths from the start without a divided audience.