https://www.cnbc.com/2019/02/11/this-is-the-real-reason-most...
It is common to blame the poor for having trouble as if all their problems have to do with poor character. We start with the example that it's possible for A poor person to build themselves from nothing to wealth and success and somehow arrive at the thesis that everyone who is struggling is only doing so because they are lazy.
https://www.washingtonpost.com/news/wonk/wp/2014/10/18/poor-...
In reality people have a varied degree of talents and make varied choices in life. Those who start out stupid and lazy at the top of the ramp end up well off with good jobs at Daddy's friends business and those who start off with nothing often end up struggling despite working hard.
Your idea would systemically privilege morons over their betters who had an illness in their family. Furthermore it would privilege the already privilege by taking votes away from the poor and gifting them to the rich. Like a perverse Robin Hood stealing crumbs from the poor to give to the rich's dogs.
Our government already primarily serves the interests of the rich and white but cannot presently afford to sufficiently alienate the poor or black lest they turn up at the polls in sufficient numbers to tip the political table.
Your suggestion intended on its face to to disenfranchise a tiny number of bums seems designed to disenfranchise minorities and the poor. I will be charitable and suppose this isn't the purpose.
Instead of carrying the political day with 49% of the vote or even 40% which is possible with our current electoral college such a suggestion would allow 20% or 30% of the population to rule by decree with little concern for the desires of their poorer kin many of which are far to close to the social and financial edge already.
When the rich rearrange the nation to even better serve their needs and service their wealth millions will see their lives destroyed.
This is my long way of saying that this is a bad idea.