long, multi-paragraph tags are often very difficult to reply to. They might be so heavy on introspection that there isn't actually much to respond to, or they might have so much dialogue that you have to either split the conversation (which can get awkward) or you have to write the characters as if they're standing around monologuing to each other (which is always awkward). so sometimes a very short response can be an attempt to bring a bloated thread back on track... but the root of the problem is probably just incompatible rp styles.