Very, very sick of the no campaign brigading every discussion with terrible arguments in bad faith.
I have yet to encounter a legal expert, or for that matter, an Indigenous Australian who is accepted by their community, who is opposed. Similarly, the law is my degree. I've spent five years of my life studying it, and although I'm not a graduate yet (two units to go), I'd think I'd know more about this shit than Joe from bumfuck nowhere on Facebook.
There is no case for a no vote. None whatsoever. The change would not grant special rights to Indigenous Australians. It has been repeatedly explained by both lawyers and politicians. You can read the change yourself. It has to be a constitutional change, because that protects it from being outright removed by successive governments, which is the very thing that happened to the previous body that performed this role. By definition, it is not racist, as racism refers to negative treatment on the basis of race or ethnic background, and not differing treatment. This is one of three steps proposed by Indigenous Australians towards reconciliation, and isn't the endpoint. If it fails, it will be the endpoint.
When the colonisers arrived, Indigenous Australians outnumbered colonisers. Now, they make up just 2.5% of the population. We are driving them to extinction. If this fails, by the time we get around to trying again, it is likely the genocide will have all but been completed.
Ethically and morally, a yes vote is the only choice. Legally, it is the best choice for change.