Actually, while it’s no Goldwing (which is surprisingly agile even at over 800lbs) it’s still on the nimble side, unlike H-D products.
Also, if you know how to do it, even a petite woman can pick up a fallen 800lb touring rig.
https://www.youtube.com/watch?v=I5k4Uj3YTnY
Until her recent passing, little 80 year old grandmother and intercontinental touring master Ardys Kellerman used to ride big BMW touring rigs and would demonstrate how she could pick up the rig if it went down at gatherings.
A comparable Harley rig in the same weight range has the weight carried way too high and is in fact like driving the QM2 around. The Goldwing and many other modern touring rigs are... substantially more agile.
https://www.youtube.com/watch?v=37XLJNLpzxQ
That big, bright yellow bike is a 900lb GL1800 Goldwing on Tail Of The Dragon. Seems to be doing just fine corner carving at higher speeds. (Yellow Wolf is rather famous.)
My Harley is right around 700lbs and is a breeze to pick up. Years ago, I got caught in a snow storm with a girl on the back and we fell over three times while I was getting used to how to ride it.
I don’t know about weight being too high. Maybe. But Harley’s are low and the engines are short. (OHV’s... none of that OCH/DOHC up there.) Maybe the dry sump with the tank under the seat?
Regardless, yeah my Hog handles like a pig. Not going to dispute that. Still my favorite bike ever owned though. Followed closely by my little RM125 that was stolen and then the RC51. A bike for every need.