@plasticfangtastic The potential physical harm of misusing mobility aids is WILDLY exaggerated to pressure people into not using them.
Hugh Laurie, as you said, never used it properly (or frankly in a way that would feel natural to most cane users imo), and he did so for many hours of filming over many years. There should have been a safety assesment, risk mitigation, a physical therapy consultant, etc. Because that was a professional environment and no one's job should injure them, ideally.
However in actual reality, most people who find mobility aids more damaging than helpful will simply stop using them way before any permanent damage is done.
Potential, hypothetical damage is not more important than the actual real damage many people are doing to their bodies right now, because they don't feel they can use a mobility aid without facing ridiculous scrutiny and judgement.
I actually did get injured because of mobility aid use. I was bedbound for several years, so when I got my rollator, I was desperate to go out to the park across our street and not be trapped at home, and I overdid it. I was out using it for too long, my posture and grip wasn't ideal, and I wasn't used to engaging those specific muscles - I ended up with costochondritis. Very scary because intense chest pain is terrifying when you don't know what's happening. It sucked, but I got through it, adjusted my rollator use slightly, and it is still an amazing mobility aid that greatly improves and enriches my life years later.
Avoiding that potential episode would not be worth it at all, if that meant not using it in the first place. I would be damaging my body in a different way every time I have to drag myself to a doctor's appointment, instead of supported and protected by my mobility aid, once the issues were sorted out.
For many disabled and chronically ill people, our reality is simply that we don't get to fully avoid negative consequences no matter what we do. A cane might put strain on your shoulder and make it hurt, but not using it would make your lower back hurt worse instead. For many of us, it's always choosing the best possibility out of a bad bunch.
Someone who doesn't need a mobility aid will simply stop using it eventually, because unless there's tangible benefits to your life, it is fucking annoying. Sometimes it's because there's another mobility aid which would fit the particular circumstances better, but if you have no issues not using one, you just won't. There are no perfectly physically healthy people fucking up their bodies through mobility aid usage. It's genuinely just a right wing boogieman.
We can reduce injuries due to mobility aid usage by making doctors and physical therapists both more accessible and more accepting of a patient's choice to use one. By destigmatising their use, promoting safety tips, and having information more widespread and freely available. Not by trying to make the stigma worse and making up this whole 'social contagion' bullshit, while doubling down on medical misogyny.
You can genuinely just read up on how to size a mobility aid correctly for your body, and you'll be fine. The people working at mobility aid stores can help you with it. Look up "how to properly use X" and read content written by other mobility aid users.
Plenty of things can hurt you way worse if used improperly. But no one is fearmongering about unnecessary kitchen knife usage. We generally trust adults to evaluate the situation, recognise when a tool might help them, and handle any potential resulting injury if it comes to that. You should ask yourself why a simple walking stick so often gets this kind of overblown, out of proportion treatment.