I thought this was bound to happen due to the sabotage of the post office that is somewhat bipartisan but increased with Trump term 1. But yesterday my grandmother just got a birthday card she had sent to me two years ago returned as “undeliverable” despite the address being correct and the postage paid. And this also caused me to find out that this happened to several other relatives, though without the two year delay, despite the address and postage being definitely correct.
I do a lot of shipping and letter sending, and I’ve actually not seen much of a systematic decline in reliability or speed in the last ten years or so. The second half of 2020 was a bit of a shitshow after DeJoy started as postmaster, but otherwise I think the service has been running reliably, and I continue to prefer it over private parcel carriers.