I would agree with this. Personally, I like to see that everything I have is enabled and working, so I always have these messages turned on, but I certainly understand how annoying that could be. If an add-on doesn't have an option to turn the initialisation messages off, contact the author and ask them to add one.Best solution:
Find out which addon posts to chat upon login/reloadui.
Contact the authors at www.esoui.com and tell them to please remove these annoying login messages (if they are not needed like showing you the time left until the stable can be used to skill your hors or research finishes -> These information can be normally accessed and changed at the addon settings page ingame).
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