I can see that one of the ills of being popular is that there is someone somewhere to write a shitty blog post about every fucking file system operation.
That's a bit harsh. It was a popular page that centered around the brand of a popular company and caused their fans to perceive them in a certain light. It is natural to want to know if the removal was deliberate or not.
There seems to be a big trend to try to expose 37signals as actually some sort of evil company or to diminish their image. Which makes sense due to their popularity and claims of excellence (which I think are, in this case, valid).