Roses and their cultivation spread from the Mid East into China, Egypt, Greece etc. thousands of years ago, pretty ignorant to blame it all on European colonialism.
At this point, seeing behavior and responses like this in so many communities of my interests, I feel like even that gentle of an approach is still too much agenda-pushing.
Not that the agenda in question lacks for value, ethics, or good intentions, but at the end of the day, based on the newbies inquiry, it's still some version of, "You're wrong for wanting to explore your interest. You should do what I tell you to do instead."
In the communities for my interests that I participate in, I try (and sometimes fail, we're all human), to explicitly steer clear of doing anything to diminish their enthusiasm, curiosity, and desire to learn. That's the little ember that they need to really get going, so for me, the priority is not to put that out.
Especially in a case like this where, sure, maybe a native garden is ideal...but the alternative if they get overwhelmed or shut down or forcibly redirected by the community is probably just going to be grass and weeds, or no plants at all.
I think it's great to offer up the natives as an alternative (while explaining the benefits to both the local ecosystem as well as to the gardener), but I would also say that if you're going to do that, one should also encourage them to get into their new interest regardless of whether they follow that suggestion or not.
If OP wants to plant tulips, fantastic, and I'll give you any tips I can on how to do that. I may suggest natives and why they're also a great choice, but under no circumstances will I go into negative territory in telling them they shouldn't follow up on their interest, unless of course it's illegal, dangerous, harmful, etc.
And if op explicitly wants roses and tulips good for them. It should be "here's how to start out with those. <Tulip info>. If you're curious, there's some pretty cool native plants that do well, and local pollinators love em. I think you'll enjoy them to. Hit me up if you want to chat about selecting native species, I'm pretty into that"
Don't make a new interest a "don't do what interests you, do what interests me" thing.
I'm big into fishing and while people are generally pretty good to newbies, people can get ridiculously preachy over catch and release vs keeping fish, as well as safe and ethical fish handling practices.
I'm all about educating, but A) you need to do it with positivity and not guilt, B) a lot of times people get super, super anal about it...like... we're all jamming a hook in a fish's mouth and dragging it out of the water...in that context, laying it on some wet grass to quickly unhook it and get a picture is not the worst part of its day, and C) just because their fish handling may not be perfect doesn't mean it's cruel either...newbies gotta learn, and they're going to learn better from gentle suggestion and explanation than coming at them telling them how wrong they are.
believe it or not, that was actually the original intention of western imperialism. keep the masses itchy and they’ll be so focused on their plight that they can’t rise up against the colonists. wake up bro, smdh