It's not like Biden is going to win Ohio so there is no point in them doing this.
Taking Biden off the ballot in Ohio would have cut his popular vote margin in 2020, from 1.5% to 2.8%.
Do you mean 4.5%?
If so, that means removing Biden from the OH ballot could mean a ~2 point rightward swing for the NPV, which may very well change the outcome of who wins the NPV (obviously not relevant to the actual outcome, but still symbolically significant).
Still, Biden will make it back onto the ballot so it's really all a moot discussion.