Speak for yourself.
Anyway, I think there are multiple factors at play here.
The somewhat framerate intensive nature of the add-on.
The real-life aircraft isn't easy to fly or so I'm told.
XP 11's broken ground handling.
There aren't a whole lot of high fidelity single-engine turboprops out there for XP so many of us jump in with no previous experience in this type of aircraft.
Finally, I think our setups play a big role. For example, I have an old Saitek X52 that I have used for many years and try as I might I couldn't get the TBM airborne without swerving down the runway like a drunken idiot so I try my friends X55 Rhino and to my surprise I had no issues getting airborne.