So then why does Bloomberg build in so many technical indicators into its product?

Look, I share your skepticism of technical analysis, but there are many traders who do not. And when managing traders, you might want to let them trade on TA because it can give them a reason to take action. Otherwise they can suffer from analysis paralysis.

I've never understood how someone had the nerve to trademark "Bollinger bands", when all they are is just a measure of 2 standard deviations from a rolling mean of share price. It's like renaming 1+1=2 after yourself and and trademarking it's use.