The Short Version
No evidence supports this claim because the Eurovision Song Contest 2026 has not yet taken place — the grand final is scheduled for May 16, 2026, in Vienna. Finland has selected its entry, "Liekinheitin" by Linda Lampenius and Pete Parkkonen, through the UMK national selection, but winning a domestic qualifier is entirely separate from winning Eurovision. The claim presents a future, undetermined outcome as established fact, which no credible source corroborates.