That’s ok.
When Chytil was on the fourth line I saw him trying to play a fourth line game most of the time. Which is probably exactly what he was coached to do. The team doesn’t resolve around these guys, people have to fill the roles available. When a spot opened for him in the top 6 he started playing more creatively, again which is fitting because the role of the top two lines is more about scoring.
Similarly, if Lias had good time with scoring players on a scoring line we’d likely see more creative play out of him. Not the same exact play Chytil shows, they’re different players. But guys on the fourth line play safe fourth line games more often than not, that’s what the coach needs from that group.