But - Cold filtering wasn't all "Marketing Shit" CUB installed millions of dollars worth of equipment, trained operators to work in & maintain a sterile clean room surrounding a sterile filter, had to instigate a higher grading and higher rate of pay for those workers. And the beer was indeed cold filtered, in as much as it was first filtered to remove yeast etc, and then filtered again through sterile filters to remove any bugs, and at no point was the beer ever pasteurised or heated up as a normal beer would have been. Whether that made the beer taste better or not... A matter of opinion.
And the Low Carb beers that some people seem to think are a way to save money on malt - are more difficult to brew, more expensive to make and require different and more expensive ingredients than normal beers. And they indeed do have less carbs than normal full strength beers as a result of the extra effort and expense.
Marketing is one thing - but these are real products, brewed in a real brewery - and if the company says something about the process or the attributes of the beer - they pretty much have to be telling the truth.