That’s cool, you’d know better than me about the PC vs Mobile games pulse 
I must admit, I buy most of my books and similar things (like COG/HG) through mobile platforms so I can read them when I get half a chance, where as my heavier duty games usually end up through steam with a bit of crossover inbetween depending on various factors. I do agree that mobile gaming platforms are potentially harmful in the review department considering the overwhelming freemium culture there compared to steam.
I just would have thought that since if a game most people are aware if a HG game doesn’t get a steam release, it’s chances of getting on in the future are possible but not great, so would have gone ahead and just bought it on another platform if they really wanted it rather than not be able to read it at all, but could be wrong. I still suspect a delayed release wouldn’t do anything to help steam sales which probably then re-enforces that HG’s don’t always sell well there.