Claims from www.OpenBCI.com that OpenBCI boards sold on eBay or Aliexpress have multiple hardware bugs – is that true?

Claim 1. «They have multiple hardware bugs», is this true? Claim 2. «These have been reported by users both in the www.OpenBCI.com forum an in the www.OpenBCI.com customer support, is this true? Claim 3. «A primary reason is that these boards lack the RFduino radio modules» is this true? Claim 4: «The OpenBCI board sold …