Everyone is in ‘a’ class. It’s a classification of the populous. Do you work for money, or does your money work for you?
If you receive a paycheck or have to budget what so ever, chances are you are not part of the classification of shitbags that push the propaganda.
Bandwidth really depends on which busses you’re talking about. Within a computer, 8Gb/s is peanuts.
Even in 2003, a single PCIE v1.0 lane could do 2 Gb/s. Today, in the end-user commercial space, a single PCIE 5.0 lane can do 32Gb/s. That’s a connection that can be external to some degree. Not even talking about memory busses and internal caches that are already approaching terabytes a second.