The UK Health Security Agency has reported a higher rate of infection in the fully vaxxed age 30 and older for the last six weeks. 79.7% of the deaths in the latest report (week 45) were fully vaxxed. Since the UKHSA and PHE have been reporting on regular basis for months, I trust their reports more that I trust this Texas study.

https://www.gov.uk/government/publications/covid-19-vaccine-weekly-surveillance-reports