[Urd-]

>It'll end DDOS by botnet.

Not even remotely. This proposal is adding this attestation to one of the last network layers, most DDOS methods won't be touched by this.

[lossolo]

It will help a lot of services like Cloudflare, basically stopping most of spamming/ddos on sites behind it. Big cloud vendors will probably implement similar solutions in which you will be able to only allow attested traffic to your site.