i'll say it's not required for you to tag that much, because yes it can take that long IF you choose to tag more than you can handle. i'm in games throwing out around 30 tags a day on average and if i do it during lunch, i can finish half. the other half i do at night. so that's less than two hours a day so long as i'm focused. this is about the length of a movie. some tags take a lot longer because i have to think more but on average i can throw out a tag in less than 5 minutes for easy threads (not ecats).

i think the only reason it would take 6 hours is if you have too many tags + are a slow tagger. in that case, you either do less tags or pick up your speed.