This is piano street, yes (and we might note it is also not "allcaps street"). This is also a board called "anything but piano", and a forum member finally reaching his fitness goal is completely appropriate here.
This could be taken as a section for random life questions, discussions, achievements, etc (excluding "Last post wins", of course, because that's more just a cure for the boredom rather than a discussion of any kind), and he is using it as such. Nothing wrong with it, and not at all connected to the negative reaction following your thread of "Hardest piece ever?".