Plants are not supposed to grow in plastic anyways. They need to breath.
My eight years of indoor and 30 years of outdoor growing state that plastic pots work perfectly fine, and I don't think I'll find another grower who will back you up on that.
Don't you realize the entire face of the pot is open, with holes in the bottom that provide adequate air exchange, so long as you haven't gone and packed your soil in too tight, or not added Perlite or something to ensure adequate drainage and aeration?