I honestly think Biden would have continued to lose support with Arab voters either way tbh. If Dems go hard on Abortion, there will definitely be further erosion because of that alone, his stance on Israel will just make it worse. Places like Dearborn already swung 41 points towards Republicans in the Michigan governor race alone from 2018 to 2022, and I'd bet things will swing even more than that from 2020 to 2024. Some of those voters will not come back.
But I don't think swings in communities like these are catastrophic for Biden in Michigan yet. I think places that continue to zoom left like Oakland and Kent counties can offset some of those losses other places. Trump continuing to say stupid stuff like he's been doing lately will probably just keep those counties on track to swing left even more. That doesn't mean Biden should ignore Arab voters, just that the campaign needs to have an insurance policy of some kind in case the losses are like Starr County, TX-like swings.