Maybe for some subset of sotware (like CRM panels or something) PMs will do everything. But if you're projecting the way one sort of software (ie user-facing, business use oriented software) is developed and put to use with software writ large, then no I don't think so
Sure, I'm just talking about 90% of software which is basic CRUD, not complex systems or microcontroller programming. In that case it's likely that just a PM could build something with LLMs.
For basic CRUD we’ve had no code solutions that PMs could have been using for decades.
The truth of the matter is that software starts as basic CRUD and then given time and users evolves into its own special snowflake. Every single system given enough time and users will become a “complex system”.