Yes,
phones used to satisfy the multi-day battery life needs. Smartphones never did, at least not mass-market smartphones. There were some smartphones that offered massive battery life but they didn't sell well enough to make it profitable to keep making them.
Same with two USB connections. Maybe one existed, but it wasn't a big seller so it was discontinued. Headphone jacks still exist, but phones without them aren't really selling worse so who knows what the future holds.
You know what sells? Mass market phones that meet everyone's needs and accessories that meet everyone's desires. Want longer battery life? Get any off-the-shelf mass market phone and pair it with a portable battery pack. Done. Want louder speakers? Get any off-the-shelf mass market phone and pair it with a Bluetooth speaker. Want a serial port? Buy any mass-market off-the-shelf laptop and a serial port adapter.
Because the next stop after "I demand a phone with loud speakers, multi-day battery life, and a headphone jack" is "no, that one is too expensive" or "no that one is running the wrong OS" or "no that one doesn't have a big enough screen" or "no that one charges with the wrong cable". The next stop is the millions of reasons to not buy exactly what you asked for. People here demand every product be exactly perfectly tailored to their own desires and no one else's and get offended when a device fits their needs but misses one or two of their desires, but also get offended when a product is released that fits someone else's needs and desires because it doesn't perfectly fit their own needs and desires.
"It can clearly be done" so why aren't you using a Moto G7 Power with its massive battery? Because this reason and that reason and the other reason because there is no way to make a device that satisfies every one of your desires. So why are you pretending that there aren't accessories available to satisfy every one of your desires... unless one of your desires is to just endlessly complain about modern technology?