In standard English, is it no longer recommended to use the word "an" instead of "a" before a word beginning in 'H', such as "historical"?

I ask because I heard a reporter on NPR today very pointedly say, ”...a historical…”.

Did I miss another English update?

Doesn’t matter a lot to me. After 50-some years it’s too ingrained for me to want to change…I rather like the quaintness of “an H”.