Not true. Research (2009 FERRARI et al, Interventions for treating hallux valgus (abductovalgus) and bunions Cochrane Library) has shown that surgical outcomes can be poor, with over 30% of bunion surgeries considered unsuccessful by the patients. In the vast majority of cases we recommend nonsurgical treatment for bunions. It is usually only required if the bony lump gets too big or if the joint has degenerated too much.
Yes, they can. We do it all the time with noninvasive bunion treatment techniques like foot mobilisation. That can correct the alignment of the big toe.
Check out this before and after picture from a study using foot mobilisation to treat a bunion, showing how you can successfully reverse a bunion and straighten your toe.
They are not all that similar. Gout is the build-up of uric acid that affects the joints and is very commonly noticed in the 1st MTPJ on the foot. Gout and bunions aren’t really related to each other aside from the fact that they affect the same joint and are commonly misdiagnosed for each other.