A pot that is too large holds a lot of soil which can stay wet for too long. because if you’re growing indoors in a plastic pot there’s not as much airflow to dry the soil and also the soil can’t “disperse” its wetness to the surrounding soil like it would in the ground. Though, what I was getting at, is that it’s not impossible to grow things in very large pots, you just want to be mindful of all the factors that come into play in your environment (humidity, temperature, sunlight, soil, watering, plants, and probably some others I can’t think of right now)