It's hurting the eyes of anyone used to or fluent in german. Yuk.
On topic: Very interesting, but needs land. Urban people should use the Hochbeet instead.
Even most news outlets can’t even get their micro-typography right in the age of Unicode.
It is ‟Foo”, not "Foo". In languages where quotes are on the baseline, e.g. German, this is even more of an eyesaw. "Spiegel" instead of „Spiegel“ (to make matters worse, the German closing quote is wrong in Verdana, somehow). And let’s not start about - vs. – vs. — or the difference between ... and … (and that you have to put a space before an ellipsis). :)
Let's take the example of "fordern" vs "fördern" - nothing in common, the former means "to demand" and the latter means "to promote/boost/foster".
So in this case, I think it does not work to add the umlaut. It may be more correct German but it does not accurately represent the article. As a half German American, I appreciate some of the comments on the language piece in this discussion but I can't agree with your request here.