I'm having a slightly hard time understanding what he is saying o.0...Sentence structure is all over the place xD.
Anyways, not very many handheld things can play flash very well anyways...so of course the DS can't play flash games o.0...Considering everything, the DS isn't all that weak, I mean it is the first shot of having a dual screen (not like its going to be perfect the first couple rounds through).
And to answer your question, yes there is a way to view gifs on the DS. Is it a great way to view gifs on the DS? Hell if I know, I don't look at gif images all that much (hell I don't look at image files that much period, manga is a different story of course xD). If anything, I would say it can show gif files decently, not computer speed, but w/e.