> People seem to hold views that getting visas to the US is a human right.
Come on, there's nothing to be gained by misrepresenting people's views.
The argument is a simple one: if you are currently within the immigration process you should be able to move through that process in a timely manner, with clear communication of expectations. Freezing appointments is a political hack: they're not changing the law, they're not altering what anyone is entitled to. They're just leaving people in limbo.
You're saying "these people took a risk", and you're right. But that doesn't mean we can't criticize the people ensuring their bet is a losing one in the least moral way possible.