If an Apple or Microsoft blogger finds themselves taking a more hardline stance than the FSF, it's easy to conclude that they're trolling/astroturfing.

However if we're talking "childish", then the "Plugins! I thought the point of HTML5 was to avoid plugins" argument wins by a mile. People, including Google, have been pushing HTML5 via various plugins, fallbacks and shims for a good while (e.g. Chrome Frame, Google Gears, Flash Vorbis decode, Java Theora decode etc.)