What you are not understanding is yes, they signed up for this but are they getting paid for signing up? No. So they can't commit to such a tight schedule because they have rent to pay, jobs irl and lives to lead such as exams, family and more. This is not some organised, funded game dev team. It is a group of people coming together to make a project with little donations and their own pockets and time. If the project actually gets backers or to the point where it can get backers then we can talk tight scheduled updates but for now it is not possible. what you are asking is something that will happen in the MMO release or at least at a stage of some sort of alpha with a monthly funding.
Though we would all like a tighter schedule, you just can't simply ask that of the devs without knowing the actual hardship of making a game with a small team that aren't getting paid for their time at this point. Be patient and considerate of their situations.
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