Because efficiency applies to everything.
Putting in the man hours to fix what, as best I can tell, two people think needs work, would increase WifS' profit by how much? Will that change bring in new users? Uh, no. Will you and zorzi buy seventy eleven billion teams to pay for the re-work? Uh, no.
So why in the hell should WifS do it? They can use the programmer who'd be farting around on an unnecessary change to do something productive.