Re: Must absolutely everything in the world involve Apple?
The iPhone is usually the top selling single handset in any given portion of the year, because the Android market is more diverse and no single handset accounts for a sufficiently disproportionate share. The iPad is also currently the top selling tablet.
So while Apple doesn't hold anything even close to a majority of the phone market, its handset is still prominent enough to be worth citing in other handset reviews. The iPad just barely still holds a majority of the tablet market so is obviously relevant to tablet reviews.
I don't see any problem with reviewers comparing new products to the best selling products in the same category.
As for always mentioning legal disputes while talking about Apple? You'd have to talk to Apple's legal department to find out why that's currently almost unavoidable.