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 ...