Frequency range in speech. A seventh in one word? What the flying?

[BassTractor]

What do you say:
Is using a sixth or a seventh in speech, within a word or between two words, "normal" or special or annoying or ... what?

Background:
"Nordic countries have the widest (?) frequency range in speech", some linguist claimed.
I'd always thought it was the Brits, but may of course be totally wrong.

Here, we have a newsreader who can well jump a seventh within a word. She's infamous for it, and some people switch off the sound when she comes on.

One Annie Hulley doing the voice-over on "The Yorkshire Auction House" jumps a documented sixth at the very least, and it made me wonder:
How does that come across in Britland?
Is that nice, normal, special, insufferable ... something else?

(To me, a cheesehead living in a cold country, it comes across as fake cosey and totally over the top, but then I tend to be the odd one out, and also can't remember such speech from my native Goudaland.)

I'm interested in hearing the British perspective on things (based on my old belief that you guys are the frequency range masters). Might well be that's she's the ultimate voice-over reader in your neck of the woods, Idunno.

Comments appreciated. It intrigues me.