Paragraph 4 has a mistake, first mention of AM4 should be AM5
I agree with the points you make in the article, pcie5 isn't needed yet and can be added in the future. The change to an LGA socket is good, will be interesting to see the interaction between AMDs heatsink retainer and an LGA socket.
The CPU will be more robust, and it's less likely you will rip the CPU out of the socket when removing a heatsink (remains to be seen though). The socket itself is more delicate as it will have the 'male' pins.
Would need to look up supplier info for a cost per 1000 units comparison, and I'm unclear what impact it has on pcb layout/routing.