While Arbitrum is not a cryptocurrency, it has the potential to benefit the Ethereum ecosystem by improving the scalability and speed of transactions, which could lead to wider adoption of Ethereum-based applications and use cases, so ETH is a rising start, not ARB.
Arbitrum has officially released their token ARB, and this thread is more focused on discussing ARB not the Arbitrum blockchain. I admit that since ARB arrived transactions on the ETH network have increased dramatically, this is because many airdrop hunters britge using ETH so that they meet the requirements for several airdrops such as zks and mask.