This would also likely to affect mars.
> Implementation of technologies that enable a global super-stable oppressive state.
And what prevents them from just sending a few nukes to mars?
>An AI disaster along the lines of a paper clip optimiser
Mars and earth are going to share some form of a network, an AI disaster on earth is not likely to be contained to earth and vise versa.
>An AI or augmented intelligence that deprecates all lesser intelligences.
Same as the above, also what prevents that AI from building spaceships and exterminating the humans on mars?
>The film version of I Robot.
Again what prevents them from building spaceships of their own?
> Biotech plague.
Plagues cross oceans they can cross interstellar space also, it's unlikely that any sort of natural/unintentional release could be contained in an era in which interplanetary travel is a common occurrence, especially if people would seek refuge on Mars, and there is nothing stopping some death cult that releases a bioengineered plague intentionally from infecting mars also.
>Regression to a stable social and biological state optimising for lower intelligence or stagnation.
Again nothing about Mars implicitly provide protection against the stagnation of human culture or knowledge.
The point is simply any large scale disaster would either not be contained to a single planet, or would still leave earth a considerably more habitable place than Mars.
None of these reasons are of course a reason why we shouldn't go to Mars.