I don't have the faucet filter, but I never heard any complaints about them. I'd guess that if your water has good pressure you won't have any problems with them.
After checking the source code, well... it just summarizes the posts. Doesn't help much with the human error problem.
But as mentioned by OP, it's in early stage of development, and they plan to add features to "find the missing perspectives on an issue" and analyze political alligmnent information. So in the future maybe it could become a useful tool.
As mentioned in other comments, this is seal script, not just normal chinese characters, so they won't do exact matches, but they are similar in their general shapes.