More and more people are disabling tracking cookies (we sometimes call it cookie-less tracking), because no cookie consent is needed then.

When cookie-less tracking is enabled some features don't work for example:

• Unique Visitors metric is very inaccurate
• New VS Returning visitors
• Goals and Ecommerce conversions will be attributed to the channel used in the visit that converts
• Some reports are very inaccurate:
  • Days since last visit,
  • Visits by visit count,
  • Visits to Conversion,
  • Days to Conversion
  • Cohorts
  • Multi Attribution

Because the features become very broken after cookie-less is enabled, people tend to get confused, and ask questions, or they may use the data not knowing it's very wrong! So it would be really useful to somehow hide these reports from users, or make it otherwise crystal clear that they shouldn't use this data. What do you think?

Note: we'd leave Visitor profile as it's helpful when user id is used

required for #15507