...claims such "asymptomatic people are not infectious" should be taken with a grain of salt.
Really? You know asymptomatic people can infect others? Please provide a link, or a history lesson, that tells of one of the times it has EVER happened.
In contrast, the experts say this is transmitted with a very high viral load, which would create symptoms everywhere. Even with the one who has only a fever, it looks very questionable as to whether they could truly infect anyone at that point, which is when they say to start getting treatment and to be careful with others.