There are a few reasons as I understand it; aside from winter sun being a bonus, when the sun is low in the sky, as well as mornings,evenings, there's also the fact that solar panels are dirt cheap now and efficiency is getting higher.
OP has 370W bi-facial panels that cost $100, I recently had solar installed the in UK with 465W single-face panels which would have cost ~£100 each to buy in small quantities, my installer clearly paid less (and charged 3x).
It has also been my experience that a few degrees off with decent enough sun (and we don't get amazing sun here in the UK) makes practically no difference to the generation; my arrays are facing E-SE and S-SW and I can slightly exceed the rated specs in the peak of summer when the sun is mid-way between both arrays and not pointing "directly" at either.
OP has 370W bi-facial panels that cost $100, I recently had solar installed the in UK with 465W single-face panels which would have cost ~£100 each to buy in small quantities, my installer clearly paid less (and charged 3x).
It has also been my experience that a few degrees off with decent enough sun (and we don't get amazing sun here in the UK) makes practically no difference to the generation; my arrays are facing E-SE and S-SW and I can slightly exceed the rated specs in the peak of summer when the sun is mid-way between both arrays and not pointing "directly" at either.