I never bring it up, Cofty does. He thinks throwing out the old "SBF thinks the earth is flat" card is the way to shut me up no matter what the conversation. He thinks it makes me look stupid to people who can't be bothered reading the whole discussion, and he's probably right.
The description of the earth as approximately spherical makes sense if you are looking at it from space with its entirety in view and with a sense of its lateral dimensions. That's a very particular perspective on the earth, one that only a few have experienced firsthand in fact.
Plus why should three dimensions be the definitive way of looking at the shape of the earth just because humans find that most useful? If we take other dimensions into consideration then the reality becomes somewhat more complicated than simply an approximate sphere. The earth is in orbit round the sun for example, and the sun around the centre of the galaxy. Should the shape of its orbit be taken into consideration when providing a precise description of its shape? And other dimensions beyond that? Are we still talking about shape and in what sense? Is there more to shape than humans can properly comprehend even?
What you are doing is isolating one particular way of looking at the earth and claiming that is the definitive way of looking at it to the exclusion of all other possibilities. That is problematic.