You can answer this question, like most deckbuilding related questions, by using statistics
Once Chaos Angel is no longer face-up, like with the effects of Phalanx, S:P or Daruma, then is flipped face-up or returns to the field, it forgets the properties of the monsters used for its Synchro Summon, such as their attribute, therefore it loses the effects that it gains from being summoned by LIGHT/DARK monsters
This created a small percentage of Base Set Pikachu cards with red cheeks as a print error, before it was corrected - and these are now highly valuable and sought-after
But Star Groups, its curated bundles of five cards built around one sports superstar, are among the stores bestsellers, according to the company