I argue it can definitely be both haha. But, I usually find that unless you’re extremely long like pushing well into 9” length, then length usually isn’t cause of being told “it’s too big”. I’m willing to bet that for guys like myself who have
both substantial length and girth, 9 times out of 10, the objection of “it’s too big” arises from the girth being too thick, not the length being too long.
Both the length and girth of my member have proven problems for partners in the past. But, the issues with length aren’t as egregious because the solution is usually just “you don’t have to fit every inch of me inside you”. The intimacy still mostly works out, even if you can’t fit the last inch or two of my dick, because the rest of the inches that
do fit still feel pretty great to us both, so it can still be a win.
The girth being too much though, well that can and has stopped intimacy entirely in its tracks before. Let’s be honest, with how girthy my member is, there
is going to be at least
some level of soreness because of how wide your orifice has to stretch open for my penis to fit inside it. That said though, if the stretch of my dick being stuffed inside you is downright painful or takes too much effort to even enter you, then it kills the mood for us both. I’m not keen on hurting my partners, the big turn-on for me during sex is that you feel good. So if you aren’t feeling good then I’m not feeling good either and it’s an all around lose-lose situation
Mainly, an overbearing length can hurt with its pokes, but you can mitigate it by not poking too forcefully or with the entire length. But there’s little to be done in the immediate moment to mitigate an overbearing girth. For me personally, I know I’ve got a lot of dick, I know its dimensions are borderline impractical - seriously who needs a penis to be
this long AND
this thick!?
But yeah, based on my experiences and knowing the experiences of many other similarly endowed guys, I agree that in the vast majority of instances, “too big” is an indictment of an overbearing girth rather than an overbearing length.