They are trying to send a message that their shit is this capable with such computing resources.
There's no argument there's much overhead in modern tech, but you can't optimize it into any desktop PC being capable of running something like Claude Opus 4.5 with practically useful performance.
And polymorph virii were a similar propaganda device for antivirus makers about 15-20 years ago, turned out nothing involving defeating some scary "polymorph" kind of virii is really needed, just better security model in Windows and users stopping to use Administrator account for web browsing.