Some changes would make your life better. The naive way most English speakers do transit is worse, but that doesn't mean transit itself would make your life worse if done in a different way.
But if you're the one poor schmuck whose quality of life goes down. Then it sucks to be you.
I can already see that I am in that group. No thanks.
In the US, public transit will always be an awful, reeking experience unless the cost of that transit rules out those who vandalize, defecate, and litter. It may be different in Japan or Belgium or some place like that... but engineering solutions don't fix sociological problems.