Link to relevant announcement email: https://lists.zx2c4.com/pipermail/wireguard/2021-March/00649... There's also Jason's reply to apparently not-nice feedback of someone from NetGate: https://lists.zx2c4.com/pipermail/wireguard/2021-March/00649...
According to the article linked and the info here in that email you linked this is my conclusion:
* Netgate tried to ship flawed code that has multiple security issues.
* Jason Donenfeld, one of the lead Wireguard developers, went out of his way to work on rewriting it to be better in time for the 13.0 release of FreeBSD
* This Netgate employee is angry that they weren't able to ship their bad code and starts throwing accusations of a smear campaign.
Am I understanding what happened correctly? Because it really makes this Firewall/Router look really bad.