As mentioned this doesn't appear to use NLP so that's moot. Most of the many applications that do sentiment analysis handle such qualifiers and reduce confiden

As mentioned this doesn't appear to use NLP so that's moot. Most of the many applications that do sentiment analysis handle such qualifiers and reduce confidence in any given detected emotion. Another common issue is context ... ie detecting "I feel awful ... Need a coke" as negative sentiment against coke. This is far more rudimentary.