Speaking of California, there are some words such as crayon, which are pronounced differently than elsewhere.
For example, my kids, born and raised in California, pronounce the word crayon, as “crain” as a one syllable word. My wife and I with midwest and east coast origin, say that word as “cray_yonn” with two distinct syllables.
I’ve lived in Southern California since my birth here sixty years ago. I’ve never heard anyone pronounce the word here in any other way besides two syllables. That excludes immigrants from other parts of the country, or another country, which is a large part if not the majority of people living here today.