Check values on "car sales.com" vs that of equivalent ICEs . That's where the real data is mate, not a 'he said" .
Im simply too busy to do the "car sales.com" study for you but the data is all there so pull out a finger and do your own research, mate.
There's at least 150 Teslas of all makes offered for sale on "carsales.com" some privately and some dealer as there are equivalent BMWs/Benzs etc etc
So rather than hearsay, why not make out a chart of say 20 Tesla 3 used vs say 20 BMW 3 ...(compare/contrast depreciation of of both) Now that would be a real contribution to the thread!