1st there is NO aftermarket tranny mount. The mount your thinking of is the lower mount. I think i've only read of 2 people who had tranny mount failures that also had an aftermarket lower mount. One guy took his off the car b/c he didnt want any hassle...not that he was scared. The other guy didnt take his lower mount off and mazda didnt even ask about it....they just fixed the damage.
It doenst matter what mods you do....if u havent touched the tranny mount it shouldnt fail....end of story. There are plenty of other high powered cars out that without this problem....and you somehow think its the owners fault?
Every post i read of yours you come off as some asshole(ghey)