Bonesmashing is theoretical. Most theories are based off of other pre-existing science, but there's zero evidence you can effectively bonesmash at home, and it's never actually been done before (changing your facial bone structure at home by slamming shit into your face).
Most of the looksmaxxers who's "done it" has also walked back on it and every X-ray they've shown does not show any evidence they made any changes to their bones by smashing their faces.
Anyone who's been in the community long enough knows it's mainly a cultural thing and anyone who's serious about Looksmaxxing wouldn't spend their time doing this.
In THEORY bonesmashing MAY work, but in the same way in THEORY you MAY be able to build a space rocket out of your garage, it requires very specific circumstances in perfect conditions consistently for prolonged periods of times to ever even get CLOSE, and this is under the assumption you have the ability to target the area with precision without it causing problems to the rest of the face. Anyone who does actually hit hard enough to cause temporary bone damage also ends up causing permanent damage.
So you can explain the science of why in theory it may work, but you won't ever be able to show evidence it's been actually done at home.
There's no real point on having the debate because you'd get more consistent and better results performing surgery on yourself at home than bonesmashing, and anyone who's in the community or has ever gotten actual results from Looksmaxxing would never actually ever advocate for it.
But you can waste your time and risk your face trying.
What are you referring to? Arthritis isn't bone growth if that's what you're implying.