Here's a proper meta-analysis into the effectiveness of the vaccine and dealing with post-covid symptoms, for anyone who's interested.
Note the 14 separate authors.
Here's the short version of the conclusion from the abstract.
"Receiving a complete COVID-19 vaccination prior to contracting the virus resulted in a significant reduction in post-COVID conditions throughout the study period, including during the Omicron era. Vaccine effectiveness demonstrated an increase when supplementary doses were administered."
Although here's a section of the abstract that suggest that our friend might not have been lied to:
" The stratified analysis demonstrated no protection against post-COVID conditions among those who received COVID-19 vaccination after COVID-19 infection."
I don't really have time to read the full thing right now, but it might be interesting for anyone who has.