We fell out when you started acting extra consonants to your words.
Be into SEA cooking all you want. There's still literally papers published about the exact flavor and pathway and it can be triggered in controlled environment...just like sour or sweet.
The OP is a no evidence straw man. There's no discussion here.
Glutamate hits distinct receptors and creates a distinctly different taste of 'savoriness'. To argue otherwise is to argue that no distinct tastes exist because having distinct taste bud receptors that respond to specific molecular structure doesn't matter and/or doesn't exist.