Dunno. Doesn't matter. I just think it's a bit weird that so many people care what others waste time on. We all have our things that we like to do that don't make a lot of sense to other groups of people.
Edit: See, even I am doing it there, thinking it's weird that other people waste time on caring about what other people waste time on. If you want to waste time on trying to convince people that they should be more productive, and that makes you happy, then go for it!
Yep. Not just time but money!
It's their money and they can do wtf they want with it. I choose to drive a shitty Skoda so I can spend money on what I think is more important, than which car I drive.
Others can drive their 100-200k cars if they want, and I won't criticize them for their purchases (which are incidentally much less costly than the 70k this guy spent on an app).
People should not propose a law to stop that guy from wasting money, but people should be allowed to have an opinion about what is wasteful and what not, and allowed to speak out their opnions.