Quite true. Recently I did a merge review [1] where among other things
I mentioned the absense of %{?_smp_flags} while building the package.
The owner fixed most of the things but just left it out saying that he
can not be bothered about such irrelevant things. I do not know about
its relevance, but there is another merge review [2] where shared
libraries are being installed without invoking ldconfig, and the
maintainer does not care to respond even a month even though I
provided a patch to fix most of the issues.