Sure he's still one of the top players, but he's not as strong this year and OP is suggesting he still has an edge against the GOAT, who this year:

- Has won Freestyle WC

- Has won SCC

- Has won 2x Titled Tuesday's

- Has won a Freestyle Friday

Hikaru can snipe a win off Magnus here and there, but I don't think there's any time control or format where he could win a long series of chess matches against Magnus.