I can see someone getting tired of worrying if they are going to be paid or not. This community wants everything done ASAP but then wants to argue about paying developers what they are worth. This is one of dozens of projects and regularly work out there. This whole crypto thing is already risky, yet we want to make it riskier by not wanting to hold on to good proven talent.
If I have the skills I would rather take the risk on my own project than one that does not think I'm worth it. We should have programmers bragging about how great it is to work for the Bitshares blockchain. That would invite more talent to want to check us out and get involved.