What’s with all these washers?

A shot of the pully in front of the damper from a few months ago after pulling the engine....(pic)
Currently back from a rebuild and I’m putting pieces back on her. There’s no way all the washers on that bolt are a good thing. Why would someone do that and how do I correct? As simple as a longer bolt?

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Betcha they had to use a longer bolt for that extra pulley on there.