All mainstream apps are vast on recent Android phones. Most everything on recent Ubuntu is fast.

Most mobile sites in general are fast, maybe not "2kb of HTML" fast, but fast enough I don't notice or think about performance when browsing.

Although, I suspect a lot of programmers can think faster than average and seem to be bothered more by small delays than the rest of us, since they're able to do things like figure out a Vim keystroke sequence instantly.