Well, if I look back from last year, I saw some airdrops that were also included in the top altcoins. And most of them have been included in the list of Binance Exchange, which is one of the most well-known top exchanges in this field.

     So, my answer is that it can be airdrop season right now, which can just go along with the trend we have at the moment with the upcoming bitcoin halving and bull run after the halving this year until next year, according to my friends readable speculations.