I'd suggest you have a go at reading the post rather than frantically knee-jerking over a couple of words. But I'll try to explain using simpler words:
The scary suggestion that under-18s with their unformed, TikTok-addled brains will be 'deciding the future of the country' isn't scary at all.
There aren't enough of them to make any noticeable difference.
So there's nothing to worry about, because this means election results will still be decided by mature, engaged, responsible and considered choices made by the enormous majority of adult, experienced voters, and based on nuanced, unbiased, impartial information such as 'Get Brexit Done', 'Stop The Boats', 'Take Back Control' and 'Strong And Stable'. And let's not forget 'Better Together'. 👍
So the proper grown-ups will still always get exactly the government and the political decisions they want! Isn't that great!