100 percent agreed, and the TT failure was the result of a high-speed stall and buffeting. To say the pilot is to blame is an understatement.
Huh? Would deSitter please decode this?
In general, a high speed stall (among other factors) could cause buffet, which is quite different from flutter. That buffet could, and should act upon the leading edge of the H stab to give the pilot a warning of impending stall. It is unlikely in the extreme that the buffet would affect the elevator trim tab in any meaningful way.
Flutter of a trim tab could occur from a combination of circumstances, which would generally include none to only light aerodynamic forces on the tab and high speed, and a combination of other factors, which could be design, construction, or maintenance (but not piloting) related. A larger aerodynamic load (like high G - piloting) on the tab would tend to prevent flutter.
A high speed stall will occur when a combination of increasing G and decreasing speed causes the critical angle of attack to be exceeded, and the wing stalls. A stalling wing is associated with rapid deceleration, which is the best thing to stop flutter. To get the increasing G, a lot of pitch control force is being applied. This control force input is likely to also assure that trim tab flutter does not begin.
High G and/or high speed stall will not cause flutter, or buffet which would harmfully affect a trim tab.
Flutter of a trim tab, caused either by poor flutter resistance at high speed (design), or failure (construction/maintenance) could very certainly cause a loss of control and high G, which the pilot could not overcome (so not piloting).
Having no more information than the photos and videos I have seen here, it certainly does not appear to me that a high speed stall occurred, though there does appear to have been a trim tab position problem.