Nice interpretation, I feel however that it might be the reverse. A 300 pound gorilla is a topic demanding attention. As I scroll down the forum, I see that a tremendous number of threads which are webcomic specific and almost none which are novel specific. That is certainly understandable considering that novels are newer to Tapas, maybe even appropriate ( I don't have access to the website's browsing data ). My quip if it has any meaning is that novels are the fun yet embarrassing family member which no one wants to acknowledge. The novel writers are certainly not entitled to any attention if they have not yet earned it.
Soooo, maybe the novel writers are a drunk 300 pound gorilla in a room with a 500 pound gorilla (who may or may not be drunk, no judgement). Mixed metaphors are fun.