THIS Stranger encounter is def the most tedious, boring and irritating secondary mission in RDR2 the rewards aren't bad but going all the way just to get an unique revolver, fancy hat and money is wasted time in my opinion.
I actually thought it was pretty damn fun-completed the whole thing in about 2-3 hours. You get a neat revolver and a neat hat, as well as arthur's drawings of algernon. I'd say it was worth it.
All depends if you enjoy exploring and collecting. I liked collecting the orchids. Finding egrette plumes is a different story. The heron and spoonbills arent too bad though. If you’re going for 100% completion try to be on herbalist 9 when you start or else you’ll have to go back and collect one of each orchid all over again