I disagree with this, Wonder Girls, Miss A and Twice sound nothing alike and all have distinct concepts from each other. I could even add Itzy to this mix because for 3 years they were extremely successful, they are maybe no longer on their peak but doesn't mean they are not successful group.
Afterall people considered JYP the best company for girl groups.
But he said 'for the moment' meaning now which is true. JYP GGs may have been great in the past but rn they are running out of ideas in the music & concept department and you know I'm right. Let's not even get into YG with whatever that new group was
HYBE on the other hand have LSFM & NewJeans serving interesting concepts and SM have aespa/Red Velvet doing the same (even in spite of LSM depaurtre). You just need to look at how SM/HYBE groups are doing on charts compared to YG (sans BP) and JYP. The former is blowing the latter out of the water rn for the reasons I said above