Or how certain human rights can be maintained for one group and not the other.
The lies and high pressure tactics they use to force people to sign away their rights are also concerning.
This is normal: Just because some republicans think evolution is a hoax, doesn't mean every republican does. Every large political organisation is actually a coalition of people with different beliefs that overlap enough to put them on the same side for now.
Hypothetically, maybe GitHub don't know much about racism, but they're very much opposed to police cruisers intentionally driving into pedestrian protesters.
That would mean they support the current protests, but as long as ICE aren't deliberately driving cars into people, they're not yet opposed to ICE.
Although right now since everybody is afraid to get cancelled on a whim, corporations are opening themselves to, and you are right in your logic, criticism for their lack of political activism.