judging by the usual conduct of the forum that isn't a bar to any conversation, but you do seem to be spending most of your time exalting the virtues of bjj which is neither Japanese or karate, so clearly you don't find the forum section heading all that important
but the comment was about your general conduct rather than these post in particular, karate and other stand up arts all have the same inherent weakness, just as all grappling arts have the opposite issue.
karate, at least some karate, does include stand up grappling and floor work, so its a much more complete art than some, certainly more complete than bjj. is it as proficient at floor work as bjj, possibly not, it is a better compromise than only being a one trick pony