I see your point about political motivation, but maybe we should be expecting 16 year olds to be more involved in the world around them, and they have a responsibility to take part in society.
That would indeed be true. I don’t think you should have an upper cap FWIW, but it’s not reasonable to suggest that lowering the voting age by 2 years is going to turn us into some kind of rogue state.
I think it’s a good idea, and I’m not sure it’s any more controversial than capping the voting age at something like 75. At the very least they have a say in the country they have to live their adults lives in.