I think the misunderstanding is coming from fear, based on both outdated information, and on the anti homosexual fear mongering that went on in the past. I only hope that people will stop being afraid of this outdated bogeyman, and stop being so paranoid about catching HIV.
I presume that everyone paranoid about it is taking all the sensible steps they can to minimize their own risk, and I certainly don't discourage people from continuing to do that. There are lots of nasty sexually transmitted diseases. HPV doesn't get nearly the coverage it should, for example, given how rapidly it seems to be spreading.
But please people, please, read up on the latest science on this, because your chance of catching it from someone undergoing proper treatment is incredibly small (and effectively zero, if they have an undetectable viral load), and even if you did catch it, it's not nearly as scary as it used to be.
It's not doing society any good to put people in prison that haven't passed the virus on, or to act as if it's the worst communicable disease out there.