He wasn't happy with his usage last year, where he spent most of the year in the bottom 6 and on PP2. That isn't the case this year
PP2 is correct, but I think the bold is better said that he had crappy linemates on the 2nd line. He was on the 2nd line last year for almost all of the season, but his linemates weren't great and it was a weak 2nd line, but the linemates are similar to this year.
Last year, Necas had the most ESTOI/GP of any Canes forward and the most 5v5 TOI of any Canes forward. His top 5v5 linemates last year were: Kotkaniemi, Drury (who replaced Kotkaniemi partway through the season when he struggle), Bunting..and then Teravainen. This year it's KK and Robinson.
The PP2 comment is spot on though.