It's a poor argument (quotes usually are). George Best said "One day they might even say that I was another Ryan Giggs" in 1992, when Giggs just broke through, which is a testament to how incredible Giggs looked early on (personally, he's easily amongst the best teenage players that I've ever seen). It's 2024 now and no one in the right mind would say that.
That's your opinion, mine is different. You can find many other lists that would have Giggs lower than Robben. From the one on
xtraimmortal (generally I trust it more than any of the "professional" lists as this one is done by proper nerds) to the one on
the caf itself (and that's including the United bias). Both were exceptional talents as teenagers (maybe I'd rate Giggs even higher at that point) but Robben grew into a better and more influential player at his peak (while Giggs managed to maintain a very high level of performances for longer).
Ribéry wasn't better than Giggs in my book though, not sure when and why he appeared in our discussion.