You'll see bloated blockchain since Ordinal need to create 2 on-chain TX to do an operation and spike on UTXO growth if people use it to create token/NFT where the owner representation using an address/UTXO with small amount of Bitcoin.
https://citrea.xyz/ is not causing any Bitcoin Testnet v4 bloat that I'm aware of.
Citrea is doing their work around there actively aren't they?