Nah, loads of people have strong feelings of love (attachment) for those that they don't respect.
Most abusive parents strongly love their children, but they don't respect them.
Until really recently in history, women weren't really seen as people and definitely weren't roundly respected. Does that mean that no man ever loved a woman until the 20th century or so?
It's dangerous to conflate love and respect. Because the concept of "love" and the feelings that most people perceive as making up the experience of "love" are so incredibly strong, that folk will imagine "respect" in order to tell themselves that the love they're experiencing is OK and they should stay in a bad, even violent relationship.
For example, they'll look at their misogynist partner and say "well he never speaks to other women, he really respects me and our relationship, so he must love me, so that's true love and I'll stay in the relationship" while completely missing the point that he may love her (i.e., want to be and stay close to her), while also being absolutely poisonous and having little to no respect for her as a human being.
You can love anyone. You can love your torturer. We just tend to call that Stockholm syndrome because we get uncomfortable with the truth of that idea.
The cold truth is that love is cheap and easy, it can exist along with loads of other awful behaviours, beliefs and feelings (including respect or lack thereof).
I can almost guarantee that there are people who can ONLY love (i.e., want to be close to) those who they have NO respect for. Who think that love can and may only exist where there is a power imbalance.
I just get a bit edgy when I see folk project very noble things (like the idea of respecting someone else) onto the concept of "love". Love isn't that great. It's not pure or good, it's a thing that happens in our brains to keep people together so that they were less likely to be eaten by predators or freeze to death in the stone age.... deifying "love" as this special pure thing, and tacking on things like "respect", is part of how women are conned into staying in shit relationships