The point is the making of a shitty fight even of this magnitude speaks nothing of the State of the entire Sport. It COULD possibly speak of the State of the Heavyweight Division, but that's only if anyone actually believes this Fight is significant in any way. No one does, it's not, it's just what might be a fun scrap (actually) between two old fat has-beens.
Your statement was just plain wrong, if it's an opinion, then your opinion is also wrong. Boxing is actually quite Healthy right now, and last year saw Champions fight each other more than each of the 10 years prior just about.