The problem with any style of music in an arranger is trying to replicate not only the authentic sounds but also the live interaction of the "band mates ". This is the real Achilles heel for arrangers or any auto accompaniment type instrument . The Blues is just one example of many .

But there are techniques that can be employed to provide the illusion of a live band playing with you . As technology advances it will get better .

The truth is chas that for me , my aspiration as a musician is bigger than my talent or the available time I have to develops the talent I have . I will never stop learning and practising but I don't have 8 hours a day to practice like cory or perhaps most of the blues players in your clip . So I have to accept some limitations not because I am lazy or don't know what excellence sounds like . I won't ever be a top piano/organ/guitar etc player but thankfully that limitation is not sufficient to block my creative processes with the help of an arranger.