I don’t see any problem with having more secure elections. Why shouldn’t you required an actual pen and ink signature?!
First, all those new costly rules fixed a problem that did not even exist. All the law did was create more hassles for voters and county clerks. Also an avenue to sabotage voter rolls.
Making it harder usually reduces turnout. Lower turnout usually benefits Republicans. So voter suppression is in their interest. If minorities are fighting back and voting anyway, good for them!
Second, what's wrong with an electronic signature? They are legally binding in all 50 states. Even checking an "I agree" box is generally as binding as a pen and ink signature.