I do the thinning by eating method for carrots hehe! They can grow very crowded if the just have enough water, and nutrients ofc, but the water is the main issue. Also planting tight helps shade the soil thus keeping water from evaporate.
Sweet harvest tender baby carrots are so nice! My carrots are still under ground as seeds, hoping they will sprout soon.
Nature does not hurry, yet everything is accomplished - Lao Tzu