So what happens if someone sneaks up and cuts the wire? Do thousands of Jews now suddenly go to Hell for breaking Shabbat rules. (Also, I now want to start a Jewish Metal band called Black Shabbat)? I mean, I presume the Jewish people don't think God will strike them down for someone else messing with them. But if they don't then they're saying there's nothing inherently wrong with what they're doing and it's all about Virtue Signalling.
Breaking the rules doesn't condemn you to hell. Jews don't believe in hell. Traditionally it involved temporal punishment - whipping or flogging, being cast out in extreme cases, etc. In the modern era, there may be some scorn and such, but there's little to no direct punishment. Nor is there any specific word on if it carries any penalty in what comes beyond this life. It might get you stuck in Gehenna for a time, which isn't so much hell as it is purgatory. But even that's only a "maybe" sort of idea.