It's not. It's worse than mania in some ways because people can do things and it looks like they're being an a***hole but actually, they're very ill. At least with mania, people recognise that you're ill and won't hold the things you do against you. I've lost so many friends and ruined so many relationships during hypomania. I've also absolutely destroyed my reputation at school, more so than when I was manic, thanks to the awful things I've said and done during hypomanic episodes.
Why are people so naive as to think that hypomania is harmless?
I'd MUCH rather have a full-blown manic episode than a hypomanic one, in terms of damage caused.