children need to experience tekiyas shofar too

Sephardi Lady on Orthonomic discusses the issue of children being watched on Yom Tov by non-Jewish babysitters who do not exactly convey the spirit of Yom Tov to the children. In that vein I just wanted to mention that that Yerushalmi (unlike the Bavli) explains (R”H 20b in Vilna ed – I am following the interpretation of the Korban haEidah) that the reason tekiyas shofar takes place during musaf and not earlier in the morning is to allow time for children to come to shule to experience the mitzvah. Now, I don't know what age children the Yerushalmi is addressing itself to, or whether the rest of the time those children might be with babysitters, but if Chazal could forfeit the ma'aleh of zerizus and delay the zechus of blowing shofar on one of the holiest days of the year to make sure children as well as adults experience the mitzvah, that should tell us something.