I have been told that don't accept payments via paypal, is that right?
Because when buyer will have his bitcoins then he can claim back money from paypal by saying that i haven't received desired product.
yes don't accept payment with paypal if you sell bitcoins, because they can chargeback money so you will lose you money, so you should avoid using paypal for that
and for using, i think that bitcoins will be better than paypal when it will be accepted in every store, but for now, paypal is better because more stores accepts it