Clap of Thunder and Crumble/Leonal's Roar

Is there a reason clap of thunder doesn't work with crumble and leonal's roar, both spells with the sonic descriptor?  Tested it with 1.42.1 and the description is correct, neither work for that feat.

I was making a daggerspell shaper and noticed those are the only two sonic spells druids even get (I think?), which makes the only reserve feat available for the daggerspell shaper's daggercast (clap of thunder) sorta pointless.

I was just looking at the same thing. The only Druid spell that works with Daggercast or Daggerspell flurry is Harm. Seems kind of pointless. Or, maybe not pointless but definitely not worthwhile for a Druid.