I doubt anyone who knew what they were doing would weaponize Ebola. At least not if they noticed it’s mutation rate. You don’t want to introduce a weapon you can’t control.
That’s not saying low tech Islamists could well try to use it as a weapon just by spreading it around without thinking through the consequences of such as act.
But I think governments fear panics and the economic effects of quarantines and that can certainly contribute to a level of dishonesty about the disease.