As Garry said, why would anyone mind? There's few enough young'uns getting into biking these days, got to encourage the ones that are showing an interest.
My view on group ride-outs is this: the fast boys ride fast, the others ride at the pace that suits them. We all know the consequences of riding too far out of your comfort zone, and it ain't pretty.
At the start we explain the route - and the one Bay has in mind (if it's the one I'm thinking of) is pretty easy to follow, and also share where we will stop to regroup (junctions or convenient laybys). No shame in being last on the road, no suicidal overtakes to keep with the pack etc. Doesn't matter how long the fast boys have to wait at each catch-up, we don't crack on until everyone is there.
We all ride at our own pace, we all enjoy the road, and when we stop we all share the craic. Simples.
Uncle Gilo