Cheap accounts from other regions are equally useful for mass upvoting preferred viewpoints.

That ignores a huge part of how spam detection works. It’s way more complex than buying some accounts.

You’d need thousands of IP addresses / proxies that aren’t flagged and a non suspicious phone number, plus various other signals like browser automation detection and other advanced bot detection.

There’s a reason those Asian spam offices are like slave camps. They use real people because they need to. It’s a whole sophisticated operation.

Take a look at the YouTube algorithm. If those other accounts aren't in the same cohorts as your target audience you aren't going to accomplish much. The idea that accounts are fungible like they were 2 decades ago isn't true.