The new censorship

As you can see in the comments from users here, the Steam software forces you to upgrade your version of Plants vs Zombies to the GOTY release even if you don't want it. Yes, even if you have disabled automatic updates for that game. They have blatantly ignored the choice made by players to keep the old version of the game, following the rules set by Valve to handle Steam.

This kind of disregard for what the player wants, taking advantage of the power they hold when they fully control your access to the games, is what makes me skeptical about digital downloads. They can tamper with your game in any way they think appropriate. Now they are saying, "oh, sorry, some character in the game may get us sued so we are removing it", but at some point you can log in to your game account and be confronted with a disclaimer telling you that "sorry, a big Earthquake killed 100,000 people in California so the Quake games are in bad taste and you can no longer play them". Or maybe one day you try to play "Rock and Roll Part 2" in a Guitar Hero / Rock Band game but then Gary Glitter is arrested for molesting a child, so then the song gets patched out of the game because some parents complained about it... You know what I mean!

And then I, as a player, will yell "stop screwing me! I just want to play my game in peace! Don't take anything away from me!". But now there's nothing I can do, because in the digital era nobody can hear you scream.