By class traitor I don't mean a fed or infiltrator. You don't have to go out of your way to denounce leftist ideas or stop the left. You just have to have class interests directly in conflict with workers and the poor. You can let your factory unionize, and take less money. But would you choose to be that factory owner if it meant your current situation improved significantly?
I don't know what I would choose because I have no hopes of owning capital. I would love to quit my job and be free to just own stuff and make money off it. But then I would have to reckon that with my beliefs. I guess you could just accept you can't be a leftist and volunteer for the wall should the day come.
I did a joke answer based on the specifics of the hypothetical, but to answer the spirit of the question I can easily easily say 'pure' leftist. I have lost jobs, homes, money, belongings because I refuse to compromise my principals. I can usually see that moment coming and plan for it, and well, I'm living with my parents rn cause that seemed cooler than letting my previous landlord sell the house out from under me without losing the sale and also losing a lot of money. However my folks have decent union gigs, are about to retire with decent pensions and well, there parents have pretty much all died so silent generation money is coming in. I have a hell of a safety net so I stick my neck out for others