Took my son to see Paddington 2. I was curious what a Rotten Tomatoes 100% movie would be like. I suppose all that means is that 100% of critics thought that it did a good job of representing the subject matter well and met all critical filmmaking goals, whatever those were. But in truth it wasn't anything to get excited about at all. A ncie movie with a pleasant message about treating people well, but ultimately not something I can see myself enjoying over and over again, which for kids movies is really the ultimate test (how often are they going to watch it on DVD over and over, and how irritating will that be for the parents). In this case, even if my son was still small and still obsessively watched movies over and over, which he is nod and doesn't, I do believe that this movie would not drive me crazy, but it would get super boring.
I don't think 100% critical success is necessarily a measure of a good movie. A good movie, I think, is something that will really move you in some way, and I don't think that can happen unless a filmmaker takes chances, and that ultimately means offending some reviewers.