I'm not ready to give up on Ilford FP4+ just yet. I like slow film. I'd rather look at all the other variables - acid vs alkaline fixer for starters - may try the TF-4 from Photoformulary. I read that Rodinal is a high alkaline developer. And anyway, aren't you supposed to believe everything that's on the internet?
I doubt FP4 is causing the pinholes. It's a great film, and manufactured to high tolerances.
TF-4 is great stuff, btw. We use it for film and paper here at casa de Bannow.