What if the newer version of the browser engine had some optimizations and fixes? (probably has) What if new APIs not only let you do things you couldn't before, but saved both your time as a developer, and maybe even valuable resources? You can't just dismiss anything that's new because you just assume nobody cares about writing good code anymore.

I don't think it's about being younger or older, it's about being a good coder or a bad coder.