You still point to plus/minus or goal-differential. Over 3 full seasons, his line only has a 40% goal differential when he doesn't play with McDavid. The only time he's positive is with McDavid. His numbers and production without him implode. You seem to constantly ignore that when pointing to his 100 points, which is pretty much driven by playing with McDavid. You really think he's getting 100 points playing with Hyman and Nylander, or Kapanen and Johnson, and getting less PP time? You don't think Matthews would approach 100 points primarily playing with McDavid at 5v5 and getting more PP time with him? Draisaitl still an elite player. But, to ignore that and the significant ice-time advantage is disingenuous. Matthews produces better on a per-minute basis and when he's asked to be the best player on his line, it has a way better goal-differential than Draisaitl when he is asked to lead a line. You want to point to PPG and plus-minus relative to team, and ignore those factors.You realize his most common line mates at forward sans McDavid are: Rieder, Chiasson, and Lucic.
Rieder has 0 goals in 62 games and Lucic 5 in 74. 5 goals in 136 games combined.
You point to Matthews lack of playmaking which is partially driven by not playing with a player who converts at a high-rate (or having the PP run through him), but then use linemates to say why Drai doesn't produce without McDavid.
Look there are arguments against Matthews. Since his rookie year he hasn't stayed healthy, and his contract has probably the least value of the 4. But, he's also produced the best at comparable ages. He's been the 2nd best goal scorer in the league since he entered it. But, you seem to overlook the flaws with Drai, which is, he's the only one who hasn't produced consistently like an elite player when asked to be a center or be away from McDavid outside of the Anaheim series. He is by far put in the easiest situation to produce the numbers you are favoring.