TravellersUnited - the site that claims 'too many' people are denied boarding or removed for being 'drunk', 'unfit', 'unruly' or being too fat. They are an anti-airline hobby blog. Nothing more, nothing less. They are not authoritative.
At the end of the day, YOU choose who you spend your money with. If a service provider does not provide a service that meets your demands and needs, then go elsewhere to someone who does.
Airlines exist to make a profit. Period. They are not public services nor do they operate for the benefit of passengers.
People seem aggrieved that the airlines are finally making money after years of huge losses and in some places government bailouts. Now they're making money people seem somewhat annoyed.
Should we go back to the days of bloated government run money pit airlines? After all these were the 'good times' of 'free food', 'free bags' and massive legroom. Oh, and terrible reliability and safety. Or maybe we should re-regulate the airlines and make them fly with 2% load factors to places that don't warrant all jet services? Or maybe we should go back to the days or £600 day return for UK domestics or AMS/CDG routes? No?
Airlines are providing services for which the market can support. They're making money too. Good on them.