I have used crowd collected data for research. You have to curate each picture carefully and cannot trust labels, there are many erroneous identifications.
Maybe if you have access to pre-curated you can trust it a bit, but if you are a researcher and use images from these websites without curation you are already doing it wrong...
AI altered images doesn't change things too much, it probably just increases the numbers of errors that already existed...
Too late. This is already the case, I don't know of a single EV that wasn't buggy on release and still buggy a year or two afterwards as the manufacturer hunts bugs in a leisurely pace. It already is like in the gaming industry. Don't buy an EV that isn't at least one year old on the market or you will become their free of charge beta tester...