I think DOGS team will cooperate with some exchange to contain the dump by incentivizing staking, they allocated hefty amount of supply for Liquidity in their allocation data I think it can be for something like this even though i'm pretty unsure myself.
I do not think it is possible to stop 5 million users to not selling their airdrop tokens on the two exchanges that they have announced.
assuming they really did, it can somehow contain the dumping to be not that disastrous, but since DOGS team themselves like to give some task in their app, I guess there will be additional task which purpose gonna prevent people from outright dumping 100% of their allocation, however if there's no such thing the price might dump so deep it'll be worth investing maybe.
I have claimed my tokens which will be credited on the 20th without going through any task. Unless they come up with some benefits in holding the token I think it will be dumped and the price will crash. NOT coin came up with a membership plan and that is why the price has been constant and many airdrop users have been holding their tokens for the membership.