News to you most users moved over to bluetooth headset thanks to the airpods(?) craze.
Only a few people are stuck with 3.5 headphone (some for valid reasons other for bogus ones).
Hence it makes sense that the jack can be rationalized to safe a few cents per device.
Meanwhile Cameras are used widely thanks to social media and everyone wanting to be a influencer....
For all who want a workaound you could check Sony sbh 5x or 2x line (dunno if they still Produce the 5x line). Those are basicly bluetooth receiver with a classic 3.5mm plug.
Sbh 56 https://amzn.eu/d/9ZVvapi
except most device stop any media when the headphones are disconeted.