[oil pan 4]

I have a top rated seller account with about a $17,000 per month listing allowance.
Yes ebay sucks at enforcing and interpreting their own rules.
I have been almost banned for selling gas mask filters as a knee jerk reaction to some mass shooting. I stopped trying to sell them, then months later ebay gave me what amounts to their idea of an apology and a $20 gift card. So I relisted them and they sold.
Your friend has probably been targeted by soccer mom's who aspire to be activists.
And yes the exact same item was for sale by other sellers. I also contacted other sellers of the same items and told them what was going on.

I saw ebay straight up ban a guy for selling AR15 gas tubes once ebays social justice worryiers realized what they were. I was building a few ghost guns and needed parts that guy had what I needed then one day he was straight up gone and all the information on the items I had bought from him had been removed.