These people have seen what this disease can do, and they have heard what reporting when they first have a symptom can do.
Indeed, they have seen what it can do.
So why is everyone so afraid of these heroes?
Because one of these heroes, after seeing what this disease can do, wandered around New York while feeling fatigued for a while and then lied to the police about having 'self-isolated' in his apartment. He only admitted that yeah, he took three subway lines, went for a jog, and went bowling after the police ran his metro card records. Another one of these heroes, after seeing what this disease can do, registered a fever of 101F on arrival in the US and shrieked like a self-righteous precious snowflake about being quarantined. Despite having seen what the disease does and showing one of the possible symptoms, she was far too special to suffer the indignity of a three week staycation and is currently going wherever the hell she chooses in Maine.
These are two people who have been working in an epidemic site, seen people bleeding and shitting themselves to death, know of other medical professionals who have contracted ebola despite wearing protective gear an following protocols, and still decided that their personal convenience and leisure trumps the health and well being of the general public. This from people who we really should expect would know better.
I'm not in a panic. I'd just like to be able to trust medical professionals who have been treating ebola victims in the middle of an epidemic area to at least twitch the needle on the common sense meter. Since this is apparently too much to ask, I think an enforced isolation is legal, reasonable, and responsible.