i wonder if that had something to do with their breakup with FedEx?

Maybe. When the two day was actually still working, I would mostly get them via UPS, but sometimes FedEx. That's still the case now (mostly UPS), they just come after more delay.

Also a boonies-Prime-er that had to cancel Prime because I gave up on it again. Even with Prime apparently my orders don't ship for 3-4 days, and only then do they ship Next Day Air and show up on day 5 after the order.

When I complained to Amazon Executive CS about it their answer was that I "selected Standard Shipping" even though I was given no other choices for shipping that would expedite it...

I am not at all in the boonies and Amazon rarely or never gives shipping options other than to delay shipment for “Prime day”.

In SF and a heavy Amazon user: 2 day shipping has gone out the window. Rarely things arrive on their expected date and Amazon now seems to "hand things off" sometimes.

Just last week got a message saying an item was handed off to the local post office and I would have to come pick it up(!) I Was going to complain but the next day it was delivered anyway, by someone. They have consistently degraded their delivery to save a nickel.