That slide was just noting factors that Daala would have to beware or overcome to succeed. While those certainly apply to VP8/VP9, Theora had many of the same problems.
VP8 was always on tenuous ground both politically and technologically. VP9 is not in a better position, either. Xiph doesn't carry political baggage -- just a reputation for building solid codecs.
Hopefully Xiph's re-thinking of codec design will pay dividends. The fact that Daala's design is coming from left-field is a real risk for adoption, but is nevertheless very welcome -- there has been only incremental progress since research into wavelet codecs in the '90s, and every single DCT-based codec in use today has been stuck in a local optimum since MPEG-1.
Well, being DCT-based isn't that important, but they are all still block-based transforms. It doesn't help that all wavelet codecs have failed, because video researchers only test with PSNR and not with human subjects.
H.264 doesn't use the DCT, but still uses the same size macroblocks, which is what made it unsuitable for very high-res video. HEVC uses up to 32x32 sized transforms.
H264's transform is integer a DCT approximation— optimized to only use small multiplies and shifts—, some may say that its far enough that it ought not be called a DCT anymore, though at least after correcting for scaling I wouldn't agree. In any case, it shares DCT's advantages and disadvantages.
VP8 was always on tenuous ground both politically and technologically. VP9 is not in a better position, either. Xiph doesn't carry political baggage -- just a reputation for building solid codecs.
Hopefully Xiph's re-thinking of codec design will pay dividends. The fact that Daala's design is coming from left-field is a real risk for adoption, but is nevertheless very welcome -- there has been only incremental progress since research into wavelet codecs in the '90s, and every single DCT-based codec in use today has been stuck in a local optimum since MPEG-1.