No, that was never the case.
As was stated last year, best estimates are that immunity would last 1 to 3 years based on experience with SARS-CoV-1 (SARS2003) and MERS-CoV (MERS2012). Immunity from the vaccines is actually likely to last longer than having a mild or asymptomatic case of COVID-19 since the immune response is much stronger. Further, we have ample evidence of reinfection with the Brazil variant and the South Africa variant. Those who had the April 2020 variant have very limited protection. This is the observable reality.
Ok, But I haven’t had a cold or flu or any sickness of any kind in almost 30 years, I got the FAUCI FLU in January 2020 and it gave me a mild head cold for 3 days. Obviously Natural Immunity lasts longer than 3 years. I gave it to my Wife and she was really sick for 2 weeks. When I spoke with my Immunology doctor, he agreed with me, in private of course.
My daughter works in the Hospital and is around the FAUCI FLU patients daily, she has not got it again and neither have any of us.