But you don't NEED to kill forward secrecy to do that. TLS 1.3 doesn't seem to be a problem for the anti-malware, IPS, or even DLP use cases. You just need to decrypt, inspect, and re-encrypt traffic at the firewall, using a CA cert trusted by your clients. The problem is lazy organizations that just want to passively collect all of the encrypted traffic and then decrypt it later at their leisure, which smells much more like surveillance than security.