What do you mean by "it's meaningless" can you expand?

They mean that K3's native floating point is MXFP4, a newer standard that's not supported in Hopper, an older nvidia chipset, so it's impossible the GPUs in question were Hopper (the article specifically mentions H200s), which is correct.

Probably either the author or the people they interviewed got the specific GPU details mixed up or wrong. Maybe it was B200s.