What I call bastardisation is the many steps stopping us from using our phone as general computing platforms. Our phones have no reason to be confined by software locks like locked bootloaders, root login, etc.
As for the lack of 2 USB ports, it pictures that phones where never thought as general purpose computers. Maybe two ports is not the way to go but the lack of an interface which can act as a display output and a USB connection like what we have now with Thunderbolt on the desktop is a shame. The inability to turn my phone, which is more powerful than my current laptop, into a normal computer unencumbered by software and hardware restrictions is a shame.
The path taken by Pinephones and their Linux ecosystems is a step in the right direction. It shows that smartphone companies can do better.
As you said, it’s basic economics, it’s more profitable for them if we buy a new phone every two years, so they lock us out of our properties with software and hardware restrictions because they can.