No one cares about disrespect, but you are very clearly wrong.
I'm not sure where you're getting your numbers, but Hoglander was actually 3rd on the team among forwards in 5v5 minutes, and 4th in 5v5 minutes per game, ahead of even Pettersson. Yes, he was 7th in total ice time per game among forwards, but that's not due to PP time, it's because of Motte's 3 minutes of PK time, and no one will argue that Motte is a top 6er on the team. Meanwhile, his 4 most common linemates by far were Horvat, Pearson, Boeser and Miller and he was in the top 6 pretty much the entire year last year, mostly on the Horvat line.
Besides that, he produced like one. He tied for 48th in the league in 5v5 points, and was 2nd on the team, only 2 behind Boeser, and well ahead of Miller and Horvat. He also led the team in 5v5 goals and was tied for 42nd in the league there. Among players with at least 500 minutes, he was tied for 70th in 5v5 P/60, again 3rd on the team, behind Pettersson and only 0.04 behind Boeser. He was also tied for 58th in G/60 at 5v5 among those with at least 500 minutes, which was 2nd on the team. And he did this with a very sustainable 9% on-ice shooting percentage and 11% individual shooting percentage.
Meanwhile, he led the team in CF%, was 2nd in SF%, 4th in GF%, 2nd in xGF%, and 2nd in HDCF%. The underlying numbers suggest he was one of the best play-drivers on the team, and because he mostly played on the Horvat line, he played against strong competition.
The regression numbers also suggest he was one of the best drivers on the team:
View attachment 460126
So when he played the minutes of a 2nd liner, played mostly on Horvat's wing, which is widely considered the 2nd line, produced better than a 2nd liner and drove play as well as anyone on the team, everything points to him being a second liner.
I know you said something before about not seeing the IQ and skill to play in the top 6 and I think maybe you watched the wrong games. Until Pettersson's injury I was hoping that they'd be put together instead, because I thought his IQ and possession game would be a perfect fit for him. He's strong on his skates and hard to knock off the puck, and routinely makes little plays to gain or keep possession, and I thought he was regularly getting the puck to others in good areas to create something. He's not like a Jannik Hansen, who could drive play and produce in spurts, but too often killed play for more skilled players. I think he'll be a very good complementary top 6 player for years, and if he's a third liner, it would be on a crazy deep team like Tampa. The capfriendly chart is a bit ridiculous. I haven't seen anyone who knows the team put Pearson ahead. Hoglander was better last year than Pearson has ever been. He did have a lull in the middle of the season though, where his decision making didn't seem as good, so perhaps that's the issue.