Yup, that tracks. As you mentioned, there are disagreements about the exact meaning and consequences of the prohibition already, so if you can find source material to back your argument, you can argue it.
They don’t view it as interpretation, but as closer to a legal argument. There’s the written law, and that’s what matters, the deity won’t judge you based on unwritten laws, because their goal was to write down the criteria that you’ll be judged by and the rules you need to follow, not to judge you based on your ability to infer the intent of the rules based on what they told you. Similar to how, when you go to court in the legal system, you’re judged by the law as written, not by the intent of the congressperson who proposed the law.
The belief that it’s the spirit that matters and not the letter of the law is itself a religious belief derived from early Christian rejection of the legalistic aspects of Judaism. It’s why so many people in this thread have such a “well of course you’re not supposed to debate the semantics of your religion, you’re supposed to know what God meant and do that instead”. Same for when someone “cheats” the legal system to “escape punishment” by “getting off on a technically”, since what they did was supposed to be punishable. Legally, that’s called “following the law”, or “making a valid legal argument”.
Some religions and people just don’t hold that belief, and so “what if an argued position clearly subverts the intent of the rule” just isn’t a compelling negative consequence, it’s just part of what happens with debate.
It’s got no bearing on either of our points, but I believe the Jewish interpretation isn’t that electricity is fire, generally, but that incandescent lightbulbs violate the prohibition on “igniting a fire”, and that many other applications violate prohibitions on things like “lifting”, “doing work”, or “cooking”.
So electricity isn’t the issue, but rather what you do with it, and even if you argue that it’s only fire if it’s Israeli wood, you’d also have to argue that BBQ wasn’t cooking.