He's poking fun at himself with the whole "programming has never been my forté" -- the fact that he kept count of all the bugs in TEX and METAFONT is the amazin

He's poking fun at himself with the whole "programming has never been my forté" -- the fact that he kept count of all the bugs in TEX and METAFONT is the amazing thing. At the risk of stating the obvious, iTeX is not a real successor of TeX, it's a deliberately-vaporware joke.