It brings value in resolving technical issues and IP address abuse issues, e.g. contacting the correct party when a compromised server participates in DDoS, spamming/phishing, etc.

Contacting the LIR only vaguely makes sense, it's like contacting the domain registrar because someone is sending phishing mail from gmail.com. In other words, mostly completely useless.

Additionally, introducing this policy change without also doing something about historical records, seems pointless.

See also previous comments from myself, Gert, Denis, and so on.

If you have questions regarding our varying takes on this issue, please ask! It's easier to discuss when it's clearer that we're reading each other clearly.