Some of your profiles have 'JB Book and research', but that doesn't help someone else who has the same ancestors as you do or they think they might, so they want to review the sources that you used to create the profile.
Many of the profiles that were created have only a year with no location, which makes it hard to determine if someone is an ancestor of someone else. Are those people in United States, England, Russia, Africa, Australia, etc.?
I know you didn't create all the profiles linked from the profile you mentioned above, but that is part of the collaboration of wikitree. Find sources and help update a profile with information. Just remember that there are frequently multiple people with the same name in the same location, so you have to be sure that the person to be updated is the correct one for the family. Checking with a PM is always a good thing to make sure when there is limited information on a profile, also.