Man are you condescending, even when you are way off target.
Robert Thomas was not on 2017-18 Blues roster, so we rule out that 4 years ago team.
Robert Thomas scored 3 PPG on the 2018-19 Blues.
He trailed Tarasenko (12 PPG), Perron (7 PPG), O'Reilly (6 PPG), Pereyko (4 PPG), Schenn (4 PPG)
He equaled Pietrangelo (3 PPG) and Dunn (3 PPG).
Kaliyev on the 2021 LA Kings has scored 6 PPG while almost exclusively on PP2..
He equals Kempe (6 PPG) and Kopitar (6 PPG) for the lead in the team both of whom are exclusively PP1.
I stand by my comment that no other team, now or in the past, would put a player who leads the team in PPG, esp a struggling PP, on PP2.
Your example of Thomas is completely irrelevant in this context, and honestly idiotic for you to even bring it up.
Of course Thomas is PP2--he is the 5th leading forward, and tied for 6th on the team in PPG, with half Kaliyev's number.