wow so after the crowdsale you now must donate more or your coin will be worthless. That sounds a bit harsh like.
It's completely fair. IotaToken stated many times that this is not an investment but software developers can purchase to implement for their IOT devices. I think they are being generous by offering their continued support for such little expense. I for one will be donating 10% of what little iota I bought when donating is back on.