Hence, the "law".
A more noble alternative is that the level of internet discourse has become so much more refined these days that if you simplify a new position to an old analogy you're just retreading old "solved" ground rather than discussing the nuances that make this particular topic business as usual/the end of society. To be fair most people are anti shooting babies and pro killing harmful parasites but neither of those analogies are particuarly novel or useful in an abortion discussion unless it's the first time you've considered the topic.