There is a big different in inbreeding mammals and inbreeding/line breeding cold-blooded creatures.

I would assume if you make this kind of statement that you have bred ball Pythons? What were the outcomes? If you had problems on what scales were the problems and what were they? If not why make such a statement?

Should you add new blood in your colony when you can, yes but making a plea such as “don't inbreed folks” might be a bit extreme don’t you think?

PS: Not an attack just questions from an inquiring mind