I disagree. What we see online is not supported by actual zoo attendance. Younger urban generations might appear zoo-critical on the surface now. They are also critical of many other things they deem "old-fashioned"...just like the generations before them.
Once these youngsters are no longer young and have kids on their own, that attitude changes drastically, especially among young mothers.
I've already stated my stand on constructive & competent zoo critique in the linked thread. And I maintain that we shouldn't give animal right activists more credit than we deserve. As for animal welfare activists, it's important to differ between the merely emotional (that end up with the AR folks) and the ones that bring some actual factual knowledge and experience to the table.
I wholeheartedly disagree; real actual actions and results will always prevail over mere virtual spiel on the long run. Especially in regard to the 20%+ of the population.