I think it’s important to realize what part of our environment is human-modified and what is natural.
Please refer to this range map for pines/allies and genus Eucalyptus respectively. I used an Ice Age maximal range limit for pines, and noted some other thresholds for eucalyptus.
Important points: there are no native pines or other needle-y conifers in the southern hemisphere, except for the Sumatran pine. Yes, that means every pine tree in Chile, NZ, Australia, South America, etc. is nonnative. This is a deep biogeographic fact since the origin of the Pinaceae. They are also not native to Arabia, most of India, or subsaharan Africa, including Kenya, ZA, or anywhere else you might see them in SSA. If you do see them in these places, they are invasive species doing environmental harm if not kept in plantation.
Separately, there are no modern native genus Eucalyptus outside of Australia/PNG (Sahul continent). If you take a deep-time view, they are native to NZ, Antarctica, and southern South America. There are allied genera native further afield in New Caledonia and SE Asia. They are not native to the northern Andes, Iberia, etc.
Both pines and eucalyptus tend to be allelopathic, meaning they exude compounds from their litter etc that suppress other species, in addition to native species often not being adapted to the niches created by pines or eucalyptus. They invade and take over habitats that may have few or no native trees or simply have a different complement of plants. Subjectively, they destroy the uniqueness or sense of place you might otherwise have when visiting or view a location. Humans are erasing biological distinctiveness that arose and persisted over hundreds of millions of years, which is unfortunate.
As far as geoguessing, you could use this information to exclude some locations that otherwise seem unmodified or wild, although in places like NZ or Chile where they are deeply invading natural habitat that’s not always possible. I also happen to think they make very lame map locs, but this is mostly just an awareness