So if I'm hearing you all correctly:
Two dogs left outside is at risk for a damaged psyche from being isolated from the rest of the pack family for a lot of the time and because of this I shouldn't have dogs unless I allow them inside and this is agreed upon by all animal professionals.
And yet somehow a dog alone in an apartment alone all day will adapt and be fine.
And this is all despite that until very recent history the vast majority of dogs have NEVER been kept indoors living with their human masters.
It doesn't have to be one or the other. With most responsible dog owners, it's not.
Dogs need to be inside, over nights, during inclement weather, to bond with the family at a closer level, during fireworks (which frighten them), etc.
Dogs need to be outside, to exercise, during good weather, to run, to play, etc.
No one here who is trying to deter you from buying dogs keeps their dog indoors 24/7, yet that's the assumption you seem to be making.