Emphatically agree here.
The most impactful Pittsburgh Penguins draft picks - who they've held on to - since 2013 when they selected Tristan Jarry and Jake Guentzel have been Dominik Simon and Valtteri Puustinen. And Simon's out of the league.
Their draft picks they've traded away aren't a ton of studs, either. Only Kasperi Kapanen, Daniel Sprong, Sam Lafferty, and Filip Gustavsson have done anything mentionable.
Let's give the 2023 and 2022 draft classes a break since they're still young. So starting with pick 4 in 2013, their next pick after Guentzel, and extending through the end of the 2021 draft, only six of their draft picks have had an impact at the NHL level and none of them above a third/fourth liner or backup goalie level.
Looking at Dallas, in the same span (mid-2013 draft through 2021), they've selected Nick Paul, Denis Gurianov, Roope Hintz, Miro Heiskanen, Jake Oettinger, Jason Robertson, Ty Dellandrea, Thomas Harley, Wyatt Johnston, and Logan Stankoven. They've held on to all but Paul and Gurianov.
There's not even a real comparison to be made between the two franchises.