Just to be clear, I'm nocking anyone for using primer tube fillers. Have at it.
I just remember early on thinking I must have one, until a seasoned comp shooter said he does plenty fine without one. He taught me to buy a few extra tubes and how to do the Winchester primer flip box thing.
I would have had a Dillon primer tube feeder had not my Dillon dealer (Bob Trueblood) told me he could never make them work 100%.