Although cash is slowly going to history we still can't without it. Cashless society is something we would like to achieve but still large number of people is still using it and it's not willing to give it up.
I wouldn't say that cash is trash, maybe is just a form that becomes oldfashioned in this high technologies era but I think despite that it will not disappear over night.
Those people says cash is trash is been obsess already with crypto and just dreaming for something unrealistic, maybe in future it possible to happen but its somehow cannot be adopted by majority since I'm sure many will select the traditional payment system. Maybe some use the cashless due to pandemic but everything will be back to normal once the world will be at good state.