Even if US CBs are more "developped" than UK ones, any CB (even junior-CB) are dangerous for light aircraft.
As someone who flew a lot where thare are also nasty, rocky, pointy things (a.k.a The Alps), I learned that deviation or circumnavigation is not always possible. Get any single CB in the Geneva area, and you can hardly fly in and out. And if I had to choose between CB and rock... well I don't.