We are the extreme cases, but for every violent crime there might be 10 could-have-been-one type of situations and 100 lesser crimes.
If our numbers are increasing, the entire distribution is shifting in our direction. For every one of us there might be 10 failed normies who get 1-2 girls in their teen years and from then on are basically incels. If the competition gets harsher, that is felt at all levels. Which is good for us because it unites us and a majority of men behind shared interests.
How rare are we really? No clue. The numbers seem to suggest that 30+ KHHVs are pretty rare, though those numbers are all old and if they follow the same trend as other data in the domain, they will have gone 3-4x in the last decade. And how many are just 1 or 2 girls away from being KHHVs? How many try and marry the first girl who's willing to take them, because they know there will never be another chance, even if that means getting stuck with some unlikable, barely attractive mentally ill whore?
I wouldn't worry about it too much. What matters is a palpable discontent spreading across a significant portion of the male population. We don't need to be many, we just need to have many men share some of our goals.