I don't see how it could be, that seems like an entirely separate issue.
> Please provide some evidence of your repeated claim that they're illegal in Europe
What kind of evidence do you want exactly? This is crystal clear to anyone with the most basic understanding of the GDPR.
Except that they have never been treated equivalently in any legal venue or government regulation.
If not, why would we just not accept that GDPR treats aircraft exactly how it treats everything else? The law, as written, clearly offers no specific coverage or exemption for any types of vehicles.
You're the one arguing that there's some special exemption for aircraft, but have done nothing to substantiate that claim.
Besides, with the GDPR it works the opposite way. You have to justify why your data processing is legal, not the other way around.
And for fucks sake, neither of Flightradar24 or ADSBExchange even offer a GDPR-compliant privacy policy. ADSBexchange does not offer one at all.