[dmorgan]

>An outdated computer/browsers sucks at resizing jpegs.

Most of us don't care about those anymore. Anything older than IE8 is out in modern web design.

>A two year old high end Android smartphone too.

Those matter even less. Two year old is near end-of-life, since people get new contracts. And Android, despite the higher market share sees less web usage (of the 20-80 scale), probably because more of them are sold to less tech-savvy users.