I never said revving to 6kprm is crap. Nor did I ever say that the std Nissan two piece isnt capable for the job intended. What I did say was that if you drive like crap and buy crap, expect to break things.
Making an assumption because its probably your job to fix other peoples f**k ups isnt an accurate sample. For every one you fixed, there could be 500 perfectly fine ones out there running smooth, issue free and have been doing so for a long time that no one ever comments on.
Ive never had issues (vibration or other), but seriously doubt it will bend or buckle. If it does, then ill report back, otherwise ill keep going another 100,000kms, "not regretting it"