In my naive observation, another explanation is that modern lights also tend to lean toward colder blueish hues than they did in ye-olden days, that were domina

In my naive observation, another explanation is that modern lights also tend to lean toward colder blueish hues than they did in ye-olden days, that were dominated by warmer, lower Kelvin hues more similar to that of candle light. Even looking back at photos from the 60s, interior lights were generally warmer than those of today. Also consider the aging process or capture medium of the photo samples from time past.