1)It is true that ..., but one vital point is being left out.
2) There is a grain of truth in these statements, but they ignore a more important fact.
3) Some people say ..., but it does not hold water.
4) Many of us have been under the illusion that...
5) A close examination would reveal how ridiculous the statement is.
6) It makes no sense to argue for ...
7) Too much stress placed on ... may lead to ...
8) Such a statement mainly rests on the assumption that ...
9) Contrary to what is widely accepted, I maintain that ...