How misinformation Works?

An analysis of a post on whatsapp group. All 168 members of this group are very well acquainted with each other, all are almost of same age, same education level same gender and closely associated to each other since last forty years. Probably best example of a well knit group.
Today a member wished Happy Birthday to a fellow friend. All details were correct, but unintentionally picture he posted was of someone else not from this group. How this simple post was received in this strongly associated group is as
a. Message was posted at 8.20 am on Monday morning.
b.At 8.42 am first query came that who is this guy being wished HBD. By that time two other members had endorsed the same HBD message.
c.at 9.05 am another member corrected that this picture is of someone else. He wrote correct name. Meanwhile another two members had wished HBD.
d.At 9.28 am, the member who erroneously posted wrong picture, accepted his mistake and reposted fresh but accurate picture.
e. Happy Birthday wishes started pouring on fresh picture.
d.At 10.31 am , one hour three minutes, after the correction was made, another member endorsed previous message.
e. At 10.35 another member pointed out the mistake made at 8.20 am. He had not seen the correction
e. At 11.03 & 11.08 am &1.38 pm another three members endorsed the first post. 9 other members in between endorsed correct post and two made corrections in their posts. One member expressed good wishes for both pots.
f. Discussion on this post took another turn on whereabouts of persons whose picture was erroneously posted. He was well acquainted to many members.
g. At 4.03 pm another member endorsed previous post and then corrected post.
Conclusion
a. When a misinformation ( unintentional ) floats on social media, it travels like air in all directions. Very few people check content. Even if rebuttal has been issued, misinformation still it will keep floating.
b. In between discussion will take meaningless turns and ends up no where.
c. Social Media only satisfy our confirmation bias
d. Political affiliations take preference over all other acquaintances.
d. Imagine if a fake information is viralled in a group where people are not acquainted to each other ( which is normal these days) how fake news impact audience.