sometimes I think if you look at the amount of token supply in such a large amount that trillions and trillions after the project runs several months or years, the token will be burned, what for if you make tokens with a large supply, but will be burned, ...?

When mostly large number of token supply projects worthless after listing than team try to reduce token supply the only way of burn.
Azbit burn 10 billion tokens because their token price low 20x from IEO price i think so they decide to burn.
NPXSXEM, NPXS burned several billions of tokens a couple of times. Total supply is highly affected in coin value.