I’m from the Philadelphia area, and so I have no accent whatsoever.
Every other region in the country has an accent only in comparison to this region, which has no accent.
So there.
Yep, pronouncing “Philly” like “fooey” and Eagles as “Iggles” is pure, unaccented American English, that’s what I always say.
Cheez Whiz and Steakum is good eatin’ too.