I’m hoping I’m not basing this on nostalgia, but I think that the Chinese food I was eating growing up (late 70s to late 80s) was better. Granted, I grew up in a much larger town than where live now, which was close enough to New York City that our family would go to Chinatown every few months.
My hometown had three or four takeout Chinese restaurants that were in our “neighborhood” (still bigger than the town I now live in in upstate NY) and several “nice” sit-down Chinese restaurants were in the area. There were were very Asians in my town, so these places were not catering to a Chinese clientele (I.e. no secret Chinese-only menu)
The sit-down restaurants had tablecloths, bound menus, nice decor and were spacious. Two of them dated from the Hawaiian/Polynesian craze of the 60s, so they basically had Cantonese menus with a few add-ons such as pu-pu platters, plus gasp a tiki bar and other Polynesian decor. One of the places was “Lee’s Hawaiian Islander” and the other was “The Pu-Pu Inn”. The other places were either Cantonese or Mandarin. There was a place called Hunan Something-Or-Other , but that was kind of out of the way.
You could get your basic Chinese food like lo mein and fried rice, just like the take-out places, but the sit-down places had more specialty dishes, more seafood, and more luxurious (but not exotic) ingredients like lobster, scallops, and duck.
Was it AUTHENTIC? With pu-pu platters and lemon chicken, I would say no. However, I would certainly say they were BETTER than the buffet options I have available to me now.
I could be nostalgic, but I think the takeout options were better in my old hometown as well. There was enough difference between the local places that if we wanted, say, moo shu pork, we’d go to one place because their version was better. Because the Chinese restaurant supply chain wasn’t as established and monolithic as it is now, the local places had to a make a lot more stuff from scratch. I’d walk by a place before they opened for lunch and staff would be at a table making dumplings. Granted, being close enough to make regular supply runs to NYC helped a lot.