At the risk of offending EVERYONE of all political spectrums, should we really accept tweets by Trump as "notable" without explicit evidence that people actually believe them and don't just treat them as hyperbole?
Left-wingers don't believe anything he says on principle.
Right wingers explicitly told pollsters or surveyors that they don't necessarily take his statements at face value or factually (they treat them as hyperbole or even symbolic) and would vote for Trump regardless (citation: recent 538 podcast. They are not exactly friends of Trump so hard to claim partisan bias there).
So, if most people don't actually believe the claims, merely the fact that he has a wide audience seems to not add up to being notable by the definition Skeptics.SE uses (that people must believe the claim), e.g. we consider humorous or based-on-fictional-stories claims to be off-topic.
The question isn't really Trump-specific but Trump does seem like an extreme case where we KNOW he isn't necessarily widely believed despite wide audience.