Well, I think that as long as we don't attack the actors and actresses themselves, it's all right to criticize a character on the show.
I like Michelle Stafford very much and she is a great actress, but I do have issues with her character.
And I do think this is the place to went your view on characters on the show, within the rules of this message board.
For instance, last week (or even earlier) one blogger asked why Nick and Sharon cheated so much on each other, and though many bloggers didn't like the question, because they felt it was a veiled dig at Sharon, it is still being allowed to be asked. You might not like the answer, but that's the way things are.
Same here, for people who don't like Phyllis' character, they should be allowed to criticize her, as long as it is within the rules of the board.