Well, I don't think that's an unreasonable request. From a developer perspective there are always a couple of apps that are always running like Terminal, Browser, Email Client and if a calendar application starts taking a huge chunk of the RAM then maybe its not worth it rather one might just use calendar.google.com as a tab in the browser.
I still think the attitude is unreasonablein a wider spectrum. I can back the criticism that you shouldn't write apps targeted at developers on resource intensive frameworks, but I also am very happy that we're in a position where fairly complex app development can be in the hands of people that would otherwise see thr barrier to entry as being too high. The potential that has to bring fresh ideas and approaches into the space in almost every area is outweighed by the limitations.
I would say that I'm less generous when companies reach global scale and still use it as a crutch to lower dev overheads though.
