Safely installing/modding/repairing automotive fuel systems is likely just as, if not more, dangerous if you don't know what you're doing. There are few interlocks on automotive fuel systems beyond "if the engine stops spinning, turn off the fuel pump" or in some vehicles, there might be a crash/rollover fuel shutoff switch.

People think working on EVs is super scary when reality is that you can usually pull a cover in the rear passenger area, find and pull a bright orange plug, and the HV system is rendered completely safe. EVs don't have a billion places you can scald or burn yourself, their "engine" compartments generally don't have much or any spinning objects that could deglove your hands, there's no fuel or oil to catch fire, no high pressure hydraulics...