Yikes! But I can relate to this. For me the early Bonafides did not work when I demoed them: at around 150 lb/5'10", for me those things, more than any other popular ski I can think of, were sensitive to how large or heavy the skier. At my smaller size, they didn't flex for beans, and thus did not hold an edge for me. Instead they skied only by slarving/sliding, pretty much like intermediate or beginner skis.
Maybe that's how the Bonafides have remained for you through all their versions, dunno.
However, the very last few years of the Bonafide (before the current max change for '21), these skis had changed. Bigger guys grumbled, power skiers grumbled, but for me, suddenly the Bonafide was soft enough to flex for me: and surprise, it was dialed in for me also, and had no chatter.
It flutters a bit charging or carving on harder groomers, but even a half inch of fresh settles down that vibration, making it as good with soft on piste as any other ski at least, and making it, for me, a really dialed in edge carver for mild off piste and soft snow days: if it's an inch to three or so inches, that's the ski I'll go to, as well as for soft mild off piste or soft mild bumps -
here in Colorado.
Unfortunately, the max changes in the newest version ruined that ski for me, though heavier skiers tell me that it is again better for them. Phooie.