Isn't it effectively computers everywhere? Sure, you may write on a piece of paper but there is a computer scanning and reporting it. I dont see a practical difference between that and submitting a form directly on a computer.
With paper ballots you can do hand recounts physically with the paper and it's much harder to change values than digitally (obviously), which is a huge difference. You could switch to hand counting by default for everything but the conspiracy theories are really durable for process changes like that so my experience is it won't make a difference.
To expand on that a bit: I've only found their preferred candidate winning to be a long term convincing argument to them (and even then they still will be suspicious). The scenarios I've heard aren't even possible in the current system but they don't trust the election system as a whole so there's no control they would be satisfied with. Even if they personally counted the paper ballots themselves they would just say the ballots were switched out before they got them. Obviously not everyone who doesn't trust elections is like this but I know a lot of people like this.
