I think the comment was saying 2 things: its bad because we loose GIF auto play facility and its bad because we will still have ads via GIFs.
So basically, its a no win move for the consumer.
However, my response would be to that would be: yes its bad if so, and if not, users can hopefully "throttle" its impact on our experience. IE. I would expect that the browser controls the parameters in which the GIF is "played" to maximize performance, or to suit user preference. E.g. Max number of frames, GIF size, looping etc
I think that comment actually says disabling autoplay on animated gifs would be annoying.