Why go through the massive expense to come all the way here if the intention is something that is not conquering or total dominion over us? We did this to our own fellow humans a couple of hundred years ago.
So yeah, call it immature or insecure. But I prefer they just leave us alone to be honest.
And? Evolution is not "Progress to this $UTOPIC_POINT". Evolution does not mean "progress at all", using "progress" as you seem to use it in the rest of your post.
They may have evolved to not have any compassion for any species that is not their own. They may have evolved to a point of having no compassion whatsoever.
There is some (human, ape) logic that if you can survive millions of years while being technologically advanced, you probably have some compassion as if not, you would be extinct. But that's just human thinking; who knows. I would like to know.
And what's it matter? There's lots of people superior to me. I'm not really concerned unless they're trying to do me harm. But that anger isn't due to their superiority, it is due to their harm.
Imagine all these scifi fans who aren't able to see actors in their favorite franchise but the characters. All of this bumped by factor of 10: pestering aliens why they aren't using e.g. photon torpedoes...
Still I'd be more concern about truly xenophobic people who'd either want to cease any contact - if it would happen or attack aliens to keep Earth and humanity "pure". Toss in religious fanatics seeing devils to spice things up.
You mastered interstellar travel and yet you arrived in THAT!?
If they treated us like dogs they'd already be better stewards of humanity than we are.