You shouldn't. That's how you get negatively tagged or banned if one of your alt gets banned for any reason.
Sorry, I forgot to add the quotation mark "", I actually wanted to be a bit ironic，They waste a lot of time doing something meaningless. Many of them are accounts 2017 ago. If they could hodl any coin, they would have become rich.
I will never use a large number of alt accounts to participate in bounty.