My mother did not teach me anything related to fighting, but the value she taught me made me the person I am today, which is far greater than anything battle-related she would have taught me.
I assume since the lower wine was too much for emporers then I assume he will wit till he is ready to lvl up to tyrant and for the higher quality stuff he will wait till he levels up to supreme
I wouldn't worry about it. the Mc is carving his own path and not following an inheritance. This should benefit him in the long run where his peers will stop at tyrant or supreme he will go further