All momo can do is absorb/reflect chakra and good taijutsu
Kaguya has the kyuubi,all the chakra from people in IT,the ability to change dimensions,immortally etc
Are people saying this dumb or what
Kaguya is a dumb creature
They say that because Kaguya went to the effort of building a Zetsu army out of fear. Based on the fact that Momo and Kin got solo'd like they did, it tells us one of three things:
1) Kaguya didn't have a clear idea of how strong (weak) they were.
or
2) She underestimated her own strength by a large margin.
or
3) She only knew they were Otsutsuki, and that they are normally much more powerful than her.