The assessor was dodge as a turd on a footpath
The principle has always been for the insurance company to sell write offs at a public auction should the owner choose not to buy it back at their prescribed rates prior to going to such a public auction. The idea was tha5 such an auction was at arms length and nothing nafarious could deny the insurer the maximum recovery amount.
Selling via underhanded private methods was never in the insurance companies interest and the only reason such occured is that corruption existed up the management chain. These days such behaviour by an assessor would almost certainly get them sacked and possibly charged for some profit by deception or fraud offence.
Yes, such behaviour was common a decade or more ago but it was never legal and always dodgy as dog dodo
PS: I say this as I’ve known people working within insurance which affords an insiders view on their behaviour. I’ve also had a few run-ins with real suspect behaviour from assessor which has always been resolved but it does take time. If your not in a hurry to close a claim. and stand on firm principles when arguing with some dullard, you’ll usually get your way... be in a hurry to settle and you’ll often get the mushy end of the stick.