I think you have interpreted the situation backwards. The wxallowed flag is not on other filesystems. Therefore, binaries on those filesystems which misbehave will fail.
There are about 15 programs which need fixing, and the wxallowed could become a piece of history. Unfortunately some of those 15 are very large ecosystems, and their upstreams are not yet concerned about this problem. >Is this a really good idea to keep wxallowed flag on /usr/local by >default? Is this so scary that many poop software will break (this is >not a big loss at all)? After all not enabling this flag by default is >the right thing to do, reliance on W|X should go to /dev/null > >The only problem I see after removing this flag and removing python >is that it also removes packages which, for example, have >devel/desktop-file-utils in run dependencies, but they work without it. > >