This is what he posted:
"Two main statistics have been used to count coronavirus (COVID-19) deaths in England: death \registrations involving COVID-19 (reported by the ONS) and deaths within 28 days of a positive SARS-COV-2 test (reported by the UKHSA). The 28-day measure is a timely measure of COVID-19 deaths to inform public health response, but less precise than death registrations which consider the cause of death.
When compared, the 2 measures closely tracked one another (85 to 90% correlation) between May 2020 and December 2021.
85% to 90% correlation would mean covid death stats were over-stated by up to 15%.
She seems confused.
She's claiming to acknowledge that the clinical count has been around since 2020 at the same time she's claiming only the eventually less accurate 28 day count was being used until recently.
She can't have it both ways.