could we relax the security around electric planes, because they don't carry as much highly explosive material?

that could make it much more convenient and appealing as a travel method

You don't see megawatt-hours of energy in batteries as potentially dangerous?

Total energy is going to be comparable for aircraft with similar ranges, I don't think a lithium fire is any less unpleasant than a Jet-A fire for for anyone nearby.

Even if the batteries could be made entirely inert, the ability to deliver a plane sized slug of kinetic energy to a building of your choice retains most of the danger.

Even if that could be avoided, a plane must remain operational enough throughout all flights to avoid falling out of the sky.

It would take a large bomb to take out a whole bus load of passengers, a very small one to put safety critical systems of a plane out of action.

As much as I would appreciate this happening, I don't think electric planes are going to make it happen.

Jet fuel, like diesel are not flammable, let alone explosive. They are combustible.

Gasoline on the other hand …

They cary the same amount of energy

Interesting thought, but I'm not sure the (admittedly flammable & explosive) fuel load is the main threat posed by a hijacked aircraft — the large mass at velocity can still to major damage and casualties wherever it is crashed.

Plus, depending on the battery chemistry, that material could also create a serious fire; it is a lot of stored energy either way.

So, I would not wait for it

Nope, because we all know about the race to the bottom of all companies and the littlest crack or wiggle room will be used to save a penny and kill people.