What he is describing is really ‘Elite’ centers. There is an intellectual dishonesty going on here so as to avoid naming Monahan as a 1C.
Monahan isn't a #1 center despite the point production. He relies to heavily on Gaudreau and his defence is non-existant.
Guys above him IMO (no order)
1. Bergeron
2. Point
3. Cirelli (same amount of points in less games, fantastic defensively and younger than Sean)
4. Matthews
5. Tavares
6. Barkov
7. Eichel
8. Larkin
9. Crosby
10. Malkin
11. Backstrom
12. Kuznetsov
13. Couturier
14. Dubois (younger, producing better on a team with less offensive weapons very arguable, more complete)
15. Barzal
16. Aho
17. Zibanejad
18.RoR
19. Schenn (has a real arguement now)
20. Seguin
21. Nate Mack
22. Schiefele
In a normal year Duchene has an arguement
23. E. Staal
24. Toews
25. Karlsson (arguable but Karlsson is producing similarly, has game breaking speed and a good defensive game, and on top of all that he's not even on Vegas's first powerplay)
26. McDavid
27. Draisaitl (I think he's more of a winger but when he does play C he's been far better)
28. Petterson
29. Horvat (arguable but Horvat has way worse linemate and better production, remember the Horvat vs Monahan polls?
30. Hertl (want to see a playoff beast? Watch this guy)
31. Kopitar
This leaves out tonnes of a arguable stuff, despite Lindholm being better as a winger he was a better center than Sean, Krejci has an argument for being better, Hischier is gaining on him and I'm sure once Hughes figures it out he will too. Old man Getzlaf could likely at least match Monahan numbers if given Gaudreau and Lindholm, while being more complete and physical.
Most contending teams have not one but two centers better than Sean Monahan, hell this year even with his awful start Backlund is 9 points behind Monahan and is way better defensively. Is Backlund a 1C? He's provided basically the same value Monahan has this year, 9 less points and a break even +/- ( I know, just for an in team look) vs Monahan's 9 more points but with #1PP time and a nice -20 (2nd worst for CGY forwards in terms of xGA/60 and bottom 4 in terms of GA/60, both of which his "one dimensional" linemate is better than him in, though just barely in xGA/60)
We're so far behind the 8ball if this guy is our "1C"