Don't they aggressively fight this? I think all your accounts can get banned if you use multiple accounts. I know they demand a working phone number and other identification data. Not saying there are no multiple accounts, just that it is not a wide-spread thing like on reddit/twitter/mastodon.
Facebook itself is very aggressive about the one account thing. But Instagram is not. It's common enough within my friend group to have multiple accounts, and bots are also kinda common.
I don't think that's an accurate description. Not only is Instagram not aggressive about the one account thing, they are actively supportive of multiple accounts. You can in fact not only be logged in to multiple accounts at the same time, you can have an Instagram feed that shows combined content for multiple accounts.
Bots? Troll factories? It's not expensive to pay people in poor countries to go through these hoops. I mean, there's businesses you can contract right now by the million if you wish.
