Pilots under training in non-landing credit simulators are occasionally criticised for failure to "fly" the simulator accurately to smooth touch down after visually acquiring the runway environment
I fear that probably says more about the attitude (or experience) of the trainers and possible personality conflicts with students than the simulator hardware.
I agree that learing a 'trick way' to land a simulator could be bad training - especially for junior students. Probably does no harm to old hands who may well be able to differentiate in their heads between the simulated and real experience quite easily with no adverse cross over.
In any educational setting life suggests the quality of the instructor/examiner has a big effect in determining the outcome for the student and flight simulators are no exception to this experience.
I have long held the view that training simulators should auto freeze as soon as they are flown outside their certificated limits (which can never be outside the certificated aircraft envelope and may indeed be inside as you discuss).
I feel this way because if the limits were being exceeded accidentally then the freeze becomes a good wake up call and if the exceedence was deliberate then the simulator should not aid and abet 'finding out what it will do' because the experience may not be valid.