They could've left the pharmacist's immunity a mystery, but had to explain outright that we wasn't, so to return to status quo on the zombie front.
This reveal really bothered me. At the end of the day, there has yet to be a virus on this planet that affects EVERYONE - even the worst of them - there is always a percentage of the population that is naturally resistant to it. This show could have introduced something truly unique to the Walking Dead mythos by saying definitively "yes, there are some people immune to the virus that turns you into a walker but it's like .1% of .1% of the total population".
That would have been interesting to me, because that would mean that there is a chance that at some point there *COULD* be a cure/resolution. Perhaps the people behind the show/comic don't want that and that's why they ended up making him a fraud, I dunno.
Some one IMDB said "We are actually watching a show about a group of villains".
If the show is indeed about a group of people who end up becoming a group of villains, then they're doing a really lousy job at being villains so far. Villains would have killed the family on the lighthouse island and tried to set up a compound there. Villains would have tried to take over the boat colony people after killing the leader so easily. Villains would have told the hotel workers to live with Travis beating to death those two ****-heads or be beaten to death themselves. Sorry, but that is a FTWD apologist trying to justify that this show is even worth watching.
I think this show is doing nothing but actually HURTING the popularity of the Walking Dead franchise and combined with the cop-out of not knowing who Neagan killed at the end of last season, I would not be surprised at all if the October 23rd premier of this next season of TWD has LOWER ratings than last season. I honestly hope it does because it will hopefully make the people who write the checks for this show take notice and realize that maybe it's time to pull back a little with multiple shows and stop with gimmicks like forced cliff-hangers.