Standardize cohort names by decade

Replace ad‑hoc branded generation names (e.g., Millennials, Gen Z) with simple, consistent cohort labels (for example: '1980s cohort', '1990s cohort') or issue‑specific cohorts (e.g., '2020 school cohort'). This reduces stereotype-driven shorthand, makes survey and research comparisons cleaner, and forces analysts to justify claims about age effects rather than relying on fuzzy labels. — Adopting a standard naming convention would curb misleading stereotypes, improve comparability in social research and polling, and shift media and policy debates away from astrologically vague cohort narratives.