If you don't want to buy then don't post useless things here please. And if you think its scam and want to warn people please do it with proofs.
And everyone has their opinion no need to calling others moron.

Regarding HW errors the miner had run just few minutes and you mostly see hardware errors more while mining with  CPU and GPU. Good ASIC devices will have them very less. And in video after running for few minutes its not necessary that cgminer shows errors.