So the air have tons of ports, function keys, escape key, touch ID, a fan not connected to anything thermal! and is heavier.

while the "PRO" macbook have a single usbC on 12", no fans, no f-keys, no escape key.

Apple is now a true Mainstream Consumer PC manufacturer! The models means nothing! Now you have to dive in model numbers and specific production runs to get what you want, just like buying Asus et al.