[q] State whether this autumn's flu shot addresses the "super K" flu variant that hits people right now.

NO, this fall's (2025-2026) flu shot does not directly address the "super K" variant (H3N2 subclade K), which is the dominant strain currently circulating.
The vaccine targets a related but earlier H3N2 clade (updated to subclade J.2 where applicable), selected before subclade K emerged in mid-2025. This results in a partial mismatch, with reduced effectiveness against subclade K specifically, though it still provides some cross-protection and reduces severe outcomes. (Sources: CDC FluView reports, WHO updates, and expert analyses from Dec 2025).

[q] but doesn't a lifetime of exposure to many flu variants and vaccines already give cross-protection against severe outcomes?

YES, lifetime exposure to multiple H3N2 variants through infections and vaccinations provides cross-reactive immunity, particularly T-cell and antibody responses to conserved viral proteins, which help reduce severe outcomes like hospitalization and death even against drifted strains like subclade K.

Flu virus evolves fast.

Every year, they pick "recent" strains for vaccine. Recent means, strains that have already died out & you won't face them, but vaxx over-trains ur body to fight them anyway, which leaves you even more open to new-real strain.

"Conserved viral proteins" means, some parts of flu virus can't evolve fast or else virus falls apart, and ur body learned to fight "conserved" parts long ago or else u wouldn't be here, so u already had "cross-reactive immunity against severe outcomes" & vaxx adds little or nothing. Same with covid.

People with "severe outcomes" were severely weakened to start with.

For normal people, to vaxx RNA or -fast-evolving- virus is mere superstition. Vaxx as religious worship, Holy Pfizer & St. Fauci with return to bloodletting & leeches.

Vaccines work... ...on slow-moving targets. Example, measles, altho RNA, is slow-evolving, so that vaccine can work. If it's a good product.