You're not his legal guardian. Nevertheless, assuming arguendo that you were, then the law would allow you to do that. "Should" is a question for the legislature. I assume you feel that this standard is too low - if so, then you should be arguing for a higher standard to be put in place by the legislature. I'm of mixed feelings about it, myself - I think that the standard may be too low also, but I'm having trouble envisioning what we might require in its place. Perhaps you can think of something. Maybe that's what the Florida leg. should be thinking about this weekend - that's why we pay them, after all.
First, Roe v Wade gave people the right to kill their children. Bloodlust not satisfied, the death industry seeks to 'broaden' the market. Nobody is safe from these 'ideal society' building Nazis.