It's actually a pretty good move.
1) Huang was milking GTX users for years with all this proprietary gsync scam => Profit.
2) Huang announces that now Pascal and turing can work with freesync => more gamers who don't' want to deal with gsync will buy Nvidia GPUs instead of getting AMD's gpus.
It's a preventive strike against whatever AMD is about to announce at CES 2019 (new GPUs or whatever)
Does it make Nvidia look kinda bad? Yeah, it does. However, the long-term financial benefits of this announcement outweigh all this.
PS Fanatics will just keep blindly praising their god-father figure, of course
ignoring the fact that Huang was screwing them over all these years just to milk more money from them heh