He is saying he can just as well work from home as not work from home, not suggesting that he goes into work.
The flu also kills healthy adults. Get your flu shots. Etc.
But yes, I have great distaste for people who could work from home while sick and instead ruin the productivity of the entire office for what can be months afterward.
Cold and flu kill old people. By going into work you are spreading disease to your co-workers, who then spread it to their family, who then risk death because you didn't want to work from home.