This is an incorrect and grossly exaggerated statement.
No one has said that Yoga is a “sport” - yet you cloud this board with your spam - why? Be quiet about your personal obsession with “Westerners” – You are just a racist! Not very impressive.
Yes, and before the BG there were thousands of years of Sramana yoga practices. Mentioning the Brahmin text BG brings no merit. It holds nothing unique. It is a Brahmin retelling of a physical reality that belongs to all creatures.
Yes, as everyone already knows. Pantajaliyogasutra is not a rare or unpopular text. It is the easiest and most accessible text on yoga.
This is your personal opinion. The views vary greatly depending of which region and tradition your teachings are from. That is to say, this is a false statement. You cannot arbitrarily set rules.
There are many ways to moksha and yes these four you mentioned are the most mainstream and popular. Again, you are bringing nothing new to the discussion. Your tone and style of writing lack any sort of clarity.
This again is a personal opinion and differs according to the region and tradition.
I don’t know who you are or how old your body is, but it seems like you are a new yogi that is very young in age. In which case that is fine, but please remember to hold your tongue when discussing spiritual matters. You are only hurting yourself and confusing yourself.