In the same way you an "do ML" without knowing linear algebra and probability theory. Such people can barely extend anything, let alone design new models from scratch.
How many ways are there to roll a 6-sided die with qubits and quantum embedding?
It took years for tech to completely and entirely rid itself of the socially-broken nerd stereotypes that pervaded early digital computing as well.
How can we get enough people into QIS Quantum fields to supply demand for new talent?
You use the skills you have.
TIL about memory retention; spaced repetition interval training and projects with written communications components in application