The activity was and is legal, thanks to recently-passed Ohio law.

If you don't like the law, which allows a person to vote immediately upon registration, I'm sure you're not alone. Nevertheless, until such time as this arguably ill-advised legislation might be repealed, you have no legal recourse. Grin and bear it.

The new law, while it might well be ill-advised, was obviously passed in response to Republican shenanigans during the last Presidential eleciton, when they went to great lengths to deny the vote to citizens in certain targeted less-affluent precincts.

I find it quite telling that, in recent years, the usual Republican strategy in regard to admission to the polls has been to allow as few people as possible to vote, while the Democrats invite participation by as many new voters as possible. What does that indicate?