If you ignore that one monolog and just accept that the extra-dimensional aliens/future human entities didn’t understand how to communicate with his daughter using only gravity, so they captured her father and had him do it, it makes a lot more sense.

And really that is what the script is trying to say… I think. It’s just very ham-fisted and ranty which does happen in Nolen movies. Basically "these beings have all the power in the universe compared to us, but without knowing (loving) the person they’re trying to reach they can’t find a way to get the message across.

Honestly in my head-cannon, the dude just went from self-sacrificing by falling into a black hole to looking at his daughter when she was trying to convince him not to leave. He’s more than a little emotional and we can’t expect him to make perfect sense.