Obviously those are scam projects or some shitcoins promotions it may sounds stupid but yes there is a possibilities that this will bring you to become millionaire if the specific coin used by the whales to pump and dump but the thing is this is a Onces in a Billion chanceso if you risk your small amount(since they are very cheap as what youve said) then go for it.but if i were you i would prefer to buy altcoins or tokens that has truthful potential than thise scamer coins
no they are not scam coins . the self drop that op is talking about are actually real and legit but as usual not all coins will have thier own dedicated value because those coins are still came from ico's . scammers can use this tactic to collect cryptos from inoscent bounty hunters that love to do self drop . scammers and self drop owners are likely the one to become millionaire because they the small amount of eth that they collect from one user can still grow if alot of people will join thier single self drop .