It's already been renamed to Coronita here in the Netherlands

Are you sure that’s the reason why? I can buy both Corona and Coronita, the difference is the size of the bottle. -ita in Spanish means “little” so Coronita bottles are 210ml while a bottle of Corona is 330ml.

all while in colder beer drinking climates, the small beers are 330ml, and regular ones are 500ml :)

Corona probably already held the Coronita trademark, because that was how it was branded in Spain until recently, because the brand was held by a winery.

It would be fun to see them reverting the brand once again. What bad luck!