This seems like an unfruitful digression.
OP already agreed that the actions of ICE are immoral and that this action is within the moral rights of the workers.
The main question is about efficacy. That isn't elucidated by introducing a thought experiment where you believe the moral rights of developers are not as clear cut.
So the question is can employees who have diverging moralities have direct input on what a company considers moral and immoral outside the common take of the population at large?
Should they? Well, one hardly can force someone to work for one's self nowadays.
Companies aren't democracies. Why should "the population at large"'s opinion matter in anyway? Most people don't even know Github exists, let alone what it's for.
At least for Americans you are wrong on all three counts, and that may be where the confusion is coming.
The workers (and as I already stated, the OP) all agree that there are actions done by ICE that are not only unethical but morally reprehensible. One of the (only) two major parties officially agrees as do a large portion of their constituents.
So your question about views "outside the common take" is interesting but not relevant to this discussion.