Is that a statement or a question? Yes, it is free.

I don't know why he asked, but I was confused about your statement. I wasn't sure of your intent. Were you asking if the user "did not buy it" metaphorically? Or were you suggesting that because the update is free (therefore impossible to buy), users should restrain (or properly frame) their criticism?

1) It's free. It's not like they took something from you.

2) You don't have to install it.

3) If you don't like it, move on and quit bitching about it.

The latter - and you expressed it a lot better than I did.