This outage really doesn't really appear to have anything to do with BGP? As in, it would have happened even if you replaced it with some super shiny modern dis

This outage really doesn't really appear to have anything to do with BGP? As in, it would have happened even if you replaced it with some super shiny modern distributed protocol. Your comment is also strange because especially in networking, BGP is far from the oldest thing we are using. There is this tendency in startup bros to assume BGP must be bad because it's old but in general BGP still holds up as a great protocol and is still something people regularly deploy into shiny new systems internally (e.g. bgp evpn vxlan) with no hesitation or regret, which is what L3 was doing here. The only real fundamental problem with BGP is that the assumption that "the internet" is such an internal system no longer holds. Solving that is primarily a social and economic problem in the same way other internet wide protocol upgrades are, just with the added difficulty of convincing a bean counter you need a few 100k for new routers.