i do not think any Airdrop worth joining at the moment. i have joined a number of Airdrops and had a very disappointing experience which i will never forget. For my entire participation i was rewarded with tokens which worth very few dollars. I have not even sold the tokens yet. I keep recieving Airdrop messages to join but i dont mind. may be it will be worth in the future but for now NO.
You are right, the tokens you get from airdrops are better to be hodl, but not all of them will survive in the future and you really need time, not a good thing to get rewards now or even this year.