Did you read what you shared?
It’s talking about security cameras, low-bitrate video.
FTA: "Myth Busted: At security camera bitrates (400-800 Kbps), H.265 provides negligible compression benefits. The marketing claims of "50% savings" apply only to high-bitrate content like 4K movies at 25+ Mbps, not security cameras."
That's also bullshit anyway. Not surprising because the article is slop.