Beyond ads/retargeting, does this render analytics services useless? Will Google Analytics and Mixpanel show anyone who isn't a daily active user as "new"? Will

Beyond ads/retargeting, does this render analytics services useless? Will Google Analytics and Mixpanel show anyone who isn't a daily active user as "new"? Will Optimizely not be able to customize my site and have that be retained for that user going forward beyond a day?