That reference to Matthew 5:45 sounds like an act of love rather than indifference, which would indicate withholding rain from all whether just or unjust.
No, it's indifference for sure. The tiny bit of life homo sapiens have is statistically irrelevant to the cosmos, and there's no evidence nature cares for our lot in life.
Even if you could prove a Prime Mover, which you can't, and even if you could prove a theistic Prime Mover, who cares about your everyday life, there's no evidence he/she/it is a loving God.