Dic: if (admitting a fact less important than the main clause)

6. CONJ | You use if to introduce a subordinate clause in which you admit a fact which you regard as less important than the statement in the main clause.

• If there was any disappointment it was probably temporary.

.... Cobuild

6. used to admit that something is possible, but to say that it is not very important.

• If she has any weakness, it is her Italian.
• So what if he was late. Who cares?

.... OALD

CF:

• ­If some want to buy expensive cars while others want to buy expensive houses, we assume that they know what is best for them and ...