A Linguist’s Guide to Pronouncing ‘GIF’
medium.com
medium.com
MAGA (rhymes with dagger or lager?) would never be pronounced with a soft G because 'ga' is only soft in such anachronisms as 'gaol' (modern spelling jail).
And it is hardly prescriptivist for the programmer that coined a term to define its pronunciation.
Opposition to the soft pronunciation is, at least in my country, because 'Jif' TM is a household cleaning product, so I'll continue to pronounce it wrongly for that reason!