I can't speak to the actual problems from chicken bones, but scale may be part of the explanation.
We are producing something like 50 billion chickens for slaughter every year. I don't think that estimate includes laying hens or culled males, either. The scale of chicken production is bonkers relative to natural bird populations.
The most abundant wild bird species is on the order of 1.5 billion. They are sparrow-sized and that's not their annual number.
Framed animals dwarf wild mammals and wild birds by mass:
We are producing something like 50 billion chickens for slaughter every year. I don't think that estimate includes laying hens or culled males, either. The scale of chicken production is bonkers relative to natural bird populations.
The most abundant wild bird species is on the order of 1.5 billion. They are sparrow-sized and that's not their annual number.
Framed animals dwarf wild mammals and wild birds by mass:
https://www.weforum.org/agenda/2021/08/total-biomass-weight-...