It's normal to a wallet with own blockchain like TRX, ETH, Waves, EOS and many blockchain project. It's easy to create new token smart contract there and usually they are doing airdrop to all wallet that contains the native token of that particular blockchain. There is nothing to worry about this airdrops, Just don't put your paraphrase on scam phishing app.
Thats true, its normal if you're holding a token of that particular blockchain.
I also have experience on that matter with my trust wallet and it doesnt bother me.
As long as you're not disclosing your paraphrase then there's nothing to worry.