Perhaps rather strangely, it's quite possible that standard separation was maintained through most, and maybe all, of this incident. There are a wide range of separation standards
In this go around situation we are not talking about separation standards but collision avoidance. 2 very different things.
In this case , as you pointed out , standard phraseology and procedures (*) were not followed and resulted once again in this kind of situation. As Juan Browne correctly analysed, this is the US, rushed down procedures to accomodate and expedite increasing number of aircraft with a drastic controllers staff shortage . This is not going to end well I fear.
Note (*) : no read back= not received,, = repeat instruction ..