Since I do no have the issue, it would certainly be true that it is understood less well than desired. But having implemented rfc 2018 and rfc 1323 on derivatives of BSD TCP among other protocols across the stack, one would not shoot entirely in the dark about networks per se.
If it is an end-to-end issue, Zerodha would certainly need your cooperation to diagnose it. Again, the intent was to highlight that not all face the issue and to be divergent from "I strongly suspect zerodha knows the cause of this issue, but cannot resolve it, hence their silence."