Interesting - never come across Pantasy/GoBricks, or Lumibricks but then it's a few years since my son decided he was too old for LEGO, and I see Pantasy is just a few years old, and Funwhole/Lumibricks just a few more. Great if there are more options of similar quality.

But "should not be taken apart anymore" fits into an entirely different category for me. If you don't need to be able to take them apart any more, it fundamentally changes requirements.