Yes you are right, I dont like the Combo of Ebay and Crypto. Actually you need to select something that is transparent, honest and secure.
Similarly this is also going on with classifieds like Craiglists, Olx, and Quikr. Criaglists have tons of fake email accounts with fake telephone numbers too.
I will advice you that you dont use Bitcoin for Ebay,Craiglists or any other E-commerce site till that site is found to be honest and secure for doing bitcoin transactions.