There is a spectrum of efficiency in consuming resources ( and causing pollution ) along which EVs, hybrids and ICE cars lie. Using the minimal resources may not be practical - but choosing to consume less by using a hybrid or en EV is worthwhile.
If you believe that the consumption of inefficiently produced/transported foods is a similar resouce problem, then reducing your usage even though you may not reduce it to zero is also worthwhile.
Being an omnivore doesn't mean you'll eat anything put in front of you, calling myself a vegetarian is the easiest way to express my eating preferences.