Don’t fall for the price narrative trap that compares apples and oranges.
Arbitrum One and Robinhood Chain actively protect against frontrunning and thereby most harmful MEV.
Some other chains that advertise lower fees have much higher MEV including frontrunning of retail users.
Speaking for myself, I’d much rather pay a known fee upfront than pay less and lose money to hidden fees in the form of being front run, sandwiched etc.