User kxwhalexk was a fan of user RainbowKun, and created several accounts on his behalf. RainbowKun created one alt account to use later. A day before he created RainbowDAO, he posted this:
RainbowKun is earliest registered on September 10, 2020, 01:09:51 PM. Then these 2 accounts appear:
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RainbowcityDAO -
Date Registered: January 28, 2021, 07:39:44 AM-
RAINBOWCITY -
Date Registered: January 28, 2021, 07:34:14 AMAnd only then the kxwhalexk account appears, Date Registered: June 09, 2021, 01:04:48 AM. Well, yes, a fan of RainbowKun who creates two accounts in support, and then registers himself, finally. Of course, this is logical and explains a lot.

These excuses remind me of the explanations of the bounty cheaters, when the wife, brother, sister, lawyer, son, daughter, grandmother, grandfather simply helped to participate in the bounty, so the addresses intersect.
