Heck. I'll use a bowl trimmer on a four footer. I have arthritis and neck issues. Having a bowl trimmer really helps.
I've had some sativas that were far too airy or full of foxtails to even try in a bowl trimmer. It would just turn them to mulch.
I thought that too about the airy flower if sativa but when its 20 footer... I'm not going to worry about loosing some fluff. Outdoor is crazy. Didnt get the 20 footer last year we had a weird growing season.
It worked alright got plenty of keeper outta the bowl. Was the last time I used it too. Its a nice piece of gear.
I have friends that love to help me trim. I just gotta swallow my pride and not be critical. I have a high bar when it comes to trimming. I'm doing it for love. Some like to do it to get done.