Why are Kenya’s Quakers ‘noisy’?

From the BBC of all places:

While known as a tra­di­tion­al­ly qui­et com­mu­ni­ty with­in Chris­tian­i­ty, in Kenya their gath­er­ings are loud and proud. For some, being ‘noisy’ is the rea­son young peo­ple are still being attract­ed to the Church. 

https://​www​.bbc​.co​.uk/​p​r​o​g​r​a​m​m​e​s​/​p​0​7​2​k​cm0