Not wrong. The International Communications Union arbitrarily defines these terms. After EHF you get “Tremendously high frequency” which is hilariously foppish.

Frequency band naming is a historical artifact. Higher frequency signals are harder to produce, early radios could never have dreamed of being on the spectrum where wifi is today.

As technology got better at making higher frequencies the superlatives got added one at a time over decades.

That is how you get "very high frequency" being so low frequency modern electronics rarely use it. It is too crowded down there for the number of things we want transmitting. I know that sounds counter intuitive, I can explain if you want.