I am not sure if catizen is even going to do vesting, nutcoin that paid a lot of participants hundreds of dollars didn't do vesting but they did launch pad on binance exchange which helped them generate a lot of profit from their too. Take for example, hamster has a very wide community on all their social channels and they upload video everyday on YouTube with millions of views and likes which in turn is generating income for them too. So, if they decided not to pay any airdrop participants, they themselves have used the community to gain popularity and also made income too.
I suppose different team different planning, sometime the dev is so greedy that they decided to vest airdrop to keep the price from dumping so much but it dumps anyway, and yes i'm talking about pixfi which also in TON ecosystem.
if catizen took that path, nobody can't do anything about it, but these game fi projects often time wasting their potential to pursue higher FDV which in turn make their project fading away slowly because they disregard the main reason why their project thrive, the community.