This is a practice for some people who expect security to be able to feel both ... however, this is usually applied by people who are less confident ... yes, usually 50% is sold at the beginning so that he does not miss FOMO, and to anticipate if the price later turns out to be no more expensive than the price when it was first listed ...
While the second 50% is also to anticipate, if there is a price explosion one day, at least the person is not just a spectator ... I know this is a favorite of many people, but this really makes someone a little more afraid to make a firm decision ... Yes, as long as you get the airdrop token, you have the right to do any strategy according to your risk profile.
It is the method that give me the best results
You can do as much research on the project as you like and you still won't know if the price will rise or fall
Generally, it's more likely to fall, so I understand who sells the airdrops at the time of the TGE
Normally, the price will fall in the TGE no matter how good the project is especially if the project have an airdrop and distribute the rewards to participants before the TGE. So the best thing to do is to sell some of your holdings if you think the project is good, even the investors will do the same. If the project was really promising, later on after most of the tokens from hunters sold the price will start to increase. That is the fact in the TGE that I've noticed.