No, it's not that - at least in British English - referring to https://en.wikipedia.org/wiki/Help:IPA/English, "hover" uses ɒ ("LOT, blockade, song") while "lover" uses ʌ ("STRUT, untidy, trustee, sung").
In British English, plover (the bird) rhymes with lover but not with hover.
I always have difficulties in the opposite direction, namely imagining how such vowels can be merged - a classic for me was a programming manual once that told me "char" (the keyword) should be pronounced care, "like the start of the word character". Confused the heck out of me, since where I come from the vowel at the start of the word character is nothing like the one in care.
Hover is “hovver”
Lover is “luvver”
Hover is pronounced with the "o" as in "hop" or "hot".
(both accents fairly neutral, English from England, Spanish from Spain)
Seems like this has upset some people.
https://www.google.com/search?q=ipa&oq=ipa&aqs=chrome.0.69i5...
First hit on Google is for India Pale Ales.
I always heard the phonetic alphabet referred to as the NATO phonetic alphabet. It doesn't seem very international given that it is entirely in English.
Also Russia has its own version https://en.m.wikipedia.org/wiki/Russian_spelling_alphabet#:~....
So IPA is a bit of a misnomer I feel.
https://en.wikipedia.org/wiki/International_Phonetic_Alphabe...
The first link was to https://ipa.co.uk Web results The Institute of Practitioners in Advertising: IPA
So I think calling it ambiguous is ok, you are if course free to disagree, but what I said wasn't fundamentally incorrect. But it seems like HN has a bee in its bonnet.