I suppose I can see the actor's agitation, but at the same time, it's a sci-fi series. You should probably expect a weird development or two every once in a while. Siddig comes off as whiny here, IMO.
I guess s**t happens, and everybody has a right to air their opinions. But, I must say, I'm really starting to get bored with assorted Trek actors bitching and moaning about their artistic integrity being compromised, stirring up old feuds and just generally coming off as petulant and damn ungrateful.
I find it particularly annoying when commentary is given reference deliberately turning in substandard performances and the like. I dare say those of us with "ordinary" jobs would be booted out on our arses for doing the same. I've lost count of the times I've had to "suck it up" and complete tasks I vehemently disagreed with in the office - that's life.