just looking at the best forwards on each of the remaining playoff teams. We'll leave Vegas out since they don't really have any homegrown players technically.
Florida- Tkachuk (not homegrown), Bennett (not homegrown), Barkov, Verhaege (not homegrown)
Rangers- Panarin (not homegrown), Zibanejad (not homegrown), Kreider, Trochek (not homegrown)
Dallas- Robertson, Pavelski (not homegrown), Hintz, Duchene (not homegrown)
Edmonton- McDavid, Draisaitl, Hyman (not homegrown), RNH
Vancouver- JT Miller (not homegrown), Pettersson, Garland (not homegrown), Boeser
Carolina- Aho, Svech, Necas, Guentzel (not homegrown)
so really, Edmonton and Carolina are the only teams who have the majority of their top forwards all homegrown. I think that narrative doesn't really mean anything.