Personally, while I was maintaining these mods, I left the red inserter in on purpose. I wouldn't have removed them with the mode off.
Two main reasons for this.
1. Blueprint compatibility.
2. The speeds are somewhere between normal Yellow inserters, and Blue fast inserters, so if you were to change them to normal reach inserters, they still do offer a speed bonus of fast inserters.
So the choice was made a LONG time ago that the long handed inserters shouldn't be removed.
I left them in on purpose, but it's up to KiwiHawk now.