I think the fact they dumbed Sam down in season seven and eight of SG-1 destroyed the character. She had that lame boyfriend, and let RepiSam onto a base, she was just stupid.
On Atlantis she was just useless.
Exactly.
And the same is true of Jack, who became sarcastic and dumb to CRINGE-WORTHY levels in the last few seasons of SG-1. Seasons 1-6 he was always goofy, but knew when to be serious, they threw that out the window i the later seasons.
The same is also true of Daniel, who they made Jack-Lite. Dumbed down, sarcastic, once again completely ruining his character.
One of
many reasons why the quality of SG went down from those years on.