The phrase "none of that matters" means that what is being discussed or considered has no importance, relevance, or bearing on the current situation. Full definition
But if we have bad drafting and free agent signings, then none of this matters because we will suck either way. (sbnation.com)
Your information may be top - notch, but if the software can't filter through the information, then none of it matters when it comes to hiring. (feather-communications.com)