I agree with this. I have a friends-to-lovers romance, and it's never been based on her best friend feeling like he had a right to her.
He stepped back when she started dating someone else and he didn't even make a move when her boyfriend broke her heart, because of his respect for her. He wasn't willing to prey on her emotional vulnerability or get in the way of her relationship even for the sake of protecting her to any extent other than telling her boyfriend he needed to treat her with respect.
Admittedly, this was hard for him, but I feel like the idea that a guy is owed anything simply for treating her kindly is what takes the 'nice guy' trope into the dangerous toxic stereotype, where they aren't really nice guys at all.
And definitely, when the choice is made it revolves around her best friend being the person she knows loves and cares for her. He's safe, and that isn't settling in her book. I wanted it to be a relationship based in mutual care for the other, not in selfishness on either party or the female lead feeling like she HAS to do anything. That was her past relationship, and this is part of her recovery.