Any recognition or regulation of Bitcoin at this point is probably a positive development. It will lead to more institutional investment and make 'price go up' which everyone loves.
Yes, i quite agree with you, it all starts from somewhere. The SEC labelling Bitcoin as a commodity is still good being that it will increase acceptance. In a long run, those who have accepted it as a commodity will find out the real reason which it was created which is to serve as currency, and other alternative uses that hodlers have devised for it.
This new development by the SEC will also instill courage and eradicate fear from all those who formerly where becoming skeptical about the status of bitcoin and were selling off. Any positive news is good for the community at the moment.