To people, no, not really. I mean, they might damage your garden but that's about it. They're herbivores so they don't really bite people or anything like centipedes do.
https://www.google.com/search?q=milliped...
Most are not, look as the, Centipede.
however , in as the area, as earth this changes.
and the habitation, as of where you live.
and they, and again most are not harmful to Humans.
