Ideally they'd hold off until we were in a place where they thought we could handle it, but I can also see the argument made that the damage is just "growing pains" that every society in the universe has to eventually deal with, and that societies which survive the initial societal damage will recover quickly with the help of the knowledge and technology they gain access to while closed-minded and inflexible societies that fail to survive the initial societal damage might not be the kind of folks you'd want to be a part of your interstellar community anyway. How we'll react when confronted with the fact that we aren't alone in the universe might be the test that determines if we get to join to club, or be sold as pets, or put to work in the mines, or just get left alone.
That seems like a human-centric perspective.
Maybe they’re a cooperative, altruistic society with an innate desire to help, and maybe had been helped by others before. To not teach us about the imminent dangers of the universe might seem unconscionable to them.
Or maybe they’re a highly ordered society with an innate common goal and see nothing wrong with asking other entities to join their mission.
Sure, some humans may view their contact as intrusive or harmful, but that doesn’t mean they automatically would as well.
If I had to bet, I’d bet you’re right, but the universe is a big place and who knows what societies might be out there that would feel totally foreign to us.
Then I'd be worried about us - we aren't the best ones in the Orion Arm. Surely there would be a clownshow of who should be representing Earth in such contact. And I doubt any nation or country would freely and willingly give all the knowledge shared by extraterrestrials and lose all the potential advantage. Unless aliens would manage to share it across the globe in some way at once or demand it has to be open to anyone or there wouldn't be "deal" at all.
The older I get, I'm more on "an elaborated simulation, prob ran by our ancestors elsewhere", "we are the first ones to emerge constantly on the edge of annihilation" or "a freak accident of cosmic d20 roll" side of things. Star Trek and rest of the stuff is pretty fun but I expect that reality is really bland and sad.
A civilization capable of space travel doesn't seem that would be so interested in slaving or torturing humans for the sake of it. Would "our culture" disappear? I still doubt it. It'd be kept as History.
I like visiting museums and learning about the history of ancient civilizations but by no means I'd like to live in the any of those past environments.