Ahhh.... sparkle has much of a point, adding this would reset the playtime records.... plus I'm not that supportive of the current afk system, I remember back when it was like, 10 min until afk, it was much better, less afk spam.

The solution could be having a 2nd line of the command or option to do /playtime raw, /playtime afk, and the usual /playtime - raw would show the playtime without afk, and the afk will show the afk time. if there is really any point adding this, I think it's up to the plugin guys, if it's not that hard go for it, if it takes some time or impossible, we got other things we need you more, like skyblock or the tnt run plugin