they don't care that the bjorne is evil...why do I think I should tell them?
I'll tell you, when my colicky 1st one was crying (all the time), the Snugli (you know, the Walmart version of Bjorn for those who can't afford a $90 carrier) did the trick at calming her, and me, when my sling wouldn't. So croch-dangling or not, crunchy or not, Snugli is what I wore her in.
I agree rice cereal that young is a no-no, most bugsprays & sunscreens are full of toxins & shouldn't be used, but there are ways to convey opinion or facts that isn't laden with judgement.
If something is really bothering you about a way SOMEONE ELSE is raising their children, the best approach I've found is to start a conversation about the way YOU did things. Not as a "you shouldn't do this" or "that thing you're doing is bad", but rather, "I found this worked well" or "when I had a newborn, we did this & it was helpful".
Calling things evil? Not so good for enticing people to listen.