"A" is an extremely annoying myth that's been around too long. It's irritating to find that it's still being circulated. A genuine product carries a genuine warranty, period. I worked at Apple and nobody was authorized to refuse service because, through some interrogation, they found out you didn't originally buy it from an authorized reseller. What an irrational fear to stick in people's heads.
"B" - what's your point? If the price is too high, don't buy it. It's a simple answer to a ridiculous complaint.
Get over your obvious problem with Amazon. If you don't like it, don't shop there. No need to spread nonsense.
For myself and many others, we will be grabbing an iPad, tax free, with an Apple warranty, as soon as they are available from Amazon.