I believe it's because Trust wallet is easily accessible and anyone can create a 'token' in the guise of creating a new token and doing an Airdrop.
My dear you have to be very careful out there. A lot of scammers use the ignorance and impatience of people to run scams.
You just have to be careful when doing crypto related stuff.
One rule of thumb i use is if it is easy, then it's a scam. Also, if it is too good to be true, it probably isn't.