The best part is eBay works exactly the same as 10 years ago, as far as I can tell.
It’s the only place someone can give you a fake tracking number (somehow people get these from UPS) get caught and other than a refund after weeks and a negative reputation ding, they get to keep on doing it. The fake tracking number scam has been going on for years too, it’s still happening. Permanently ban for people caught doing this, preferred shippers with eBay as a managed tracker or something like that.
Surely you're not getting scammed by sellers with lots of reputational history?
I actually am more nervous as a seller, as their buyer protection almost always sides with buyers, at least in the US (and the fee is astronomical.)