This is empirically false. It's at least 25% worse than the 2018 flu season, which was the worst flu season in decades, and that's with unprecedented mitigation measures in place.
> De oversterfte in week 10 tot en met 19 van de COVID-19 epidemie was 9.768
> De oversterfte tijdens de 18 weken griepepidemie werd geschat op 9.444
Anyway definitely not 25% worse.