that its easy to understand, valve needs more games = more funds for their own projects.
now you might not have a lot of people to sell to as a project since ur a smaller one, but from their perspective, if they have 100k developers like u , with 2 3 projects, and they all sell 30-50 products trough steam, imagine their cuts as they get a % of each sale. so its in valves interest to get u approved even if ur 5% under the greenlit stage... but this is only what i see and it shouldnt be so surprising ... but maybe im wrong and might be their system got faulty
however this is looked at, one thing is for sure... community campaigns to get greenlit is irrelevant from this problems perspective.
i hope you guys are doing well on sales