I think it's not just a question of the societal pressure. From the little I could understand in the paper, the HIV vaccine would be considerably more complicat

I think it's not just a question of the societal pressure. From the little I could understand in the paper, the HIV vaccine would be considerably more complicated than the Covid-19 ones, primarily do deal with all the immune escape issues. So it'd likely have a harder time getting authorized due the complexity of the mechanisms.