Ok there are symptoms but my understanding is for many people they're negligible. Also I'd be interested to see the symptoms related to actual chemical dependency on marijuana-specific chemicals, versus generic withdrawal symptoms from denial of expected dopamine release, which you could get by changing how you game, work out, have sex, eat, whatever.
What? For many, many users this is just completely not true. Insomnia, headaches, nausea, irritability are all common symptoms of weed withdrawal.