You have seen, but I've own count less Limas man, and I actually had one pushing 22''. 8 years it took to get it that size. I dabbled with catfish before and I know there growth rate. All I'm saying is, assumptions, jumping to conclusions, quick to flame isn't the type of attitude that is needed here. Get all the information needed and then help out. Easy yes? As for you keeping anything above 9'' in a 135gal, that's all you.
As for muffy goes, I can respect that she loves catfishes and is so passionate about them. But, all you can do is educate the uneducated.