No offense, but this strawman is super telling. I don't advocate for
the censorship of these employees, even if I do find what they're doing morally reprehensible.
If you feel it should be "unacceptable behavior contract or no" for them to express their right to free speech simply because you disagree with their politics then yes you are advocating censorship.
It's possible to hold two beliefs at once. I detest their ideology but I wouldn't dream of censoring them. If you're projecting the belief that everyone you disagree with should be censored, then you should take a look in the mirror.
I'm saying their ideology is unacceptable (anyone calling for censorship should be shunned), not the fact they're speaking their mind.
Unless you have a union and a contract with your employer, you’re an at will employee with no recourse (at least in the US). You’re free to your opinion, but also to find employment elsewhere if you take issue with your organization’s partnerships. Freedom of speech doesn’t translate to guaranteed employment while demanding editorial control of your employer’s platform.
It should be noted that union organizing activities are protected in the US from employer retaliation.