Would be you. While there are some grains of truth to the "bad style match" concept for the most part it is used as a cop-out to discredit a victorious fighter. Fighter A may have destroyed fighter B without breaking a sweat but it's not because he's a better fighter, fighter B just has problems with that style. It's a steaming pile of horse manure.
You can add yourself to the list of fools. You use the term grain's of truth in reference to a term which has lasted as long as the fight game has existed. I could provide hundred's of boxing examples but considering this is an MMA website I'll utilise MMA examples.
A recent example which highlights styles/fights in a clear & concise manner to someone [such as yourself] who uses the term 'grain of truth' would be the Anderson, Sonnen, Maia triangle. Lets call them A, S & M.
Fighter A has elite level striking, average TDD & strong defensive BJJ. Fighter S has elite level takedowns, poor BJJ & Average to below average striking. Fighter M has Average TD's, Average striking & elite level BJJ & Grappling.
Fighter A [Anderson] has little worries versus fighter M [Maia] - Maia doesn't possess the striking to threaten him, nor does he possess the takedowns to alter the stand-up game.
Fighter S [Sonnen] Doesn't possess the striking but he does however possess the elite level TD's to nullify fighter A's attack, win rounds & open his own striking.
Even though A is a more dominant fighter than Fighter M - Fighter S actually has far more trouble with fighter M [Maia].
Whilst fighter M doesn't possess dangerous striking, nor does he have elite TD's - He does possess strong grappling [Judo]. The methodology for fighter S to win a fight is via the takedown, but by attempting to takedown fighter M he is also walking into his biggest danger. Grappling & BJJ. When you factor in fighter S having poor BJJ - The end result is a quick sub.
To ignore styles in fights is to ignore the existence of strength's and weaknesses. Every single fighter has them & there isn't enough time in a fighters lifetime to become a top tier elite at everything.
Every fighter has a weakness & there is always someone out there who will have the tools to expose it. It doesn't [ALWAYS] mean said fighter is better. SOMETIMES it is just a bad match-up. Whether that term is overused or not is another story.