To respond to the 'nuance' of your remark, that helmets change rider behavior for the worse, resulting in higher aggregate injuries - that is also incorrect. The passage of helmet laws results in significant reductions (20-50%) in head injuries and deaths. These are reductions among the same population, in the same geography, in a short timeframe. It is indisputable.
If the total number of recorded injuries is going up, it's because ridership has increased. Ridership is up for lots of reasons, population growth and health benefits being two of them. Cycling is a terrific way to improve your overall health, even when the risk of injury or death due to cycling is taken into consideration. [2]
And if manufacturers profit from improving the health and safety of a population? Good.
[1] https://newrossgreenway.org/bicycle-helmet-vs-no-helmet-stat... [2] https://pmc.ncbi.nlm.nih.gov/articles/PMC10546027/