It's easy to hate on Excel or Microsoft, a "dumb" program and a faceless mega corporation. Don't get me wrong, I'm no fan. But the real question is what are journals doing? It seems like the obvious solution is for editors and reviewers to do a quick search for these errors. To me, this is more of an indication of how poor most journals really are.

(You could argue that supplementary data should be in an open format, so you could automate this checking. I'm not against this, either.)