It seems there might be some confusion about how WikiTree operates. A great first step is to engage with other members and seek advice or ask questions right here in G2G before forming conclusions on your own.
I have read the Public vs. Private discussions and I think that if we are to ignore all individuals who were born less than 100 years ago then there can be no legitimate reasons to maintain a global family tree since there will be no way for anyone to really find their roots.
The policy of limiting detailed entries about individuals born less than 100 years ago (unless deceased) is to ensure privacy and comply with laws like the GDPR. This doesn't mean these individuals are ignored or cannot be documented, but it requires careful management of certain details to protect privacy.
WikiTree uses different Privacy Levels, detailed in the Help:Privacy section, which allow us to share a significant amount of information about recent ancestors with family members while controlling access. Tools like the Trusted List enable collaboration with relatives and other genealogists, respecting privacy while building a comprehensive family tree.
as we all know the first steps in genealogy research is to identify our immediate roots which will no longer be available.
It is still available... Every new member of WikiTree is encouraged to begin by adding information about their immediate family. However, if these family members are living, the site helps safeguard their information at the Unlisted level. This protection remains unless you either invite them to join as members or they pass away, at which point the heavier restrictions on their profiles can be lifted.
I have worked too hard to maintain a considerable amount of information on the descendants of my grand parents at the behest of my cousins so it can be shared with them all so that all this work would be a waste of my time and energy to post on WikiTree so it can be deleted upon my demise.
First, we go back to the privacy features referenced above. You can still create profiles of Living People, but we just need to make sure that information is protected. There are special restrictions for children under 16. It is very easy for a parent to join WikiTree by answering a few questions, add profiles of their children, and then add you to the Trusted List so you can manage and document them.
Second, you may want to read up on the Advanced Directive.
It is ridiculous to think that famous people such as Angelina Jolie and Justin Trudeau have very detailed Wikipedia pages and yet you cannot have this information available in a genealogy tool such as WikiTree.
But they do have profiles and information available on WikiTree... See: Voight-50 and Trudeau-195. The profiles may need some work, but that would be easy to accomplish. Reach out to the associated projects...