This is why a successful democracy is one where only well educated and thoughtful people vote. Making it easier and easier to vote is a losing formula.
I know you are trolling. But, what country are you using as an example? And what is the “this” in the comment you are replying to (I think you are attempting to make a point rather than actually responding to the content)? And finally, investing in education is a better solution than suppressing the vote.
How are you defining a successful democracy? If 20% of a nation elect a philosopher king type leader, is that more "successful" than 90% of another nation electing a tyrannical despot?