I trust the professionals in a trade. I hold them in high regard. Their opinion matters.
Apple touts the fact that Academy Award winning editors use their products. The professional editors will state clearly that they are using FCP7.
This carries a lot of weight with me. This is why pissing off 5,000 professional editors is not good. Apple's reputation and brand is being jeopardized.
I think this hits the nail on the head. There was a time when it was important to brand the Mac platform as capable of serious computing, to establish that it's not just a toy.
The sense that there's a "upper limit" to what is capable on the platform (i.e., serious people on the cutting edge of a sexy industry don't use Macs) is really bad PR, and would probably drive away a number of average consumers. After all, look at all the coverage this topic is getting, and the discussion it's generating among people who probably won't even buy the product, let alone use it to its potential!