Not Much of an Argument, Really

I believe the other argument amounts to "But Flash is good...enough".

From Daring Fireball:

Not Much of an Argument, Really:

Matt Buchanan:

It’s interesting, to say the least, that a device promising to be the best browsing experience — cue Scott Forestall crazy eyes — is in fact reshaping the internet. You could argue it’s for the better, moving sites away from proprietary formats and heavy, resource-sucking designs to more open standards, and more efficient layouts that are easier to use (as many have, convincingly).

What’s the other argument?