I can understand if they had kept him as a background 1 note character....but Apu was one of the best fleshed out characters on the show.
Business owner, devoted husband (and pre marriage, one of the most wanted men in Springfield), smart, etc. etc.
I get the voice thing, but as a character he was developed well beyond stereotypes.
All 100% facts here. Not to mention, is it fukked up to just admit that there are people that look and sound like Apu?
My thing is this. Even though I don't think they'd even let Apu be a character, if they did, they wouldn't give the role to a white guy. The Simpson's is over 3 decades old, though. That's how things were back then. It don't like the trend of everyone apologzing for every single thing multiple decades in the past, just because it's seen as culturally insensitive now.
And like you said. Apu was a fleshed out character. He had many sides, and he wasn't just a stereotype. He was partially a stereotype, but that was a beautiful thing about The Simpson's. They didn't single out and pick on anyone in particular. They made fun of everyone.
Jamie Foxx also made a great point after he got criticzed for making fun of Caitlyn Jenner. He said something along the lines of,
"Look, me making fun of you is a sign that you're accepted. I'm not gonna crack jokes to someone I truly dislike, or don't want around. I'll just ignore them and have nothing to do with them. No one I like is above me making fun of them, so me cracking jokes at Caitlyn just means that I think she's really just no different than the rest of us." I thought that was a good way to frame it.
EDIT: I know there are a lot of damaging stereotypes out there, but god damn. I think everyone needs to lighten the fukk up a little bit. I'm on a soap box, but last thing. I did a lot of world travel in 2017, and one of the collest things was seeing how so many people in other countries don't themselves so damn seriously all the time. Basically everywhere I went, people were way more likely to have a laugh at their own expense.