Doing this is the same as declaring 'war on drugs' instead of treating it as a medical condition, and trying to fix addiction problems by medical campaigns.
I think the USA do this because they have a weak state, that can't really steer people's social and mental health. I think the ideal approach would be to look at how we can improve society, in order for 'incels' to stop existing.
Technology plays a big part as culprit. Speaking from my experience, watching YouTube / Instagram / etc. fools my brain into thinking I have a social life, and makes real social interactions feel harder, as they're messier. It makes me socially anxious, because I almost never need to practice real-life interactions.
I think the above happens to many young men today, and we should look at it as a society and find / promote solutions.