There are bottoms for whom it is important. It feels different, reaches different spots, or maybe fulfills different psychological desires. I know what I prefer, and if I'm going to hire, I want to satisfy my desire (not someone else's preferences or worldview).
It's fine that it isn't important to you, but it's very clearly important to others -- there's a reason it's a sorting stat on RM or Sniffies.
Declaring that an interest in size is "disrespectful" is like a feminist arguing that porn is disrespectful, or arguing that TERF lesbians are anti-trans because they don't want to fuck a pre-op transwoman -- we can intellectualize it all we want, but sexual desire is what it is. Don't yuck my yum.
This forum is a great place for men to be candid about their desires, and discuss them, but there's no need to impose our own preferences on everyone else.