The HIV med may not be complete quackery. two studies have made a connection between long covid and presence of EBV. EBV is often associated with HIV among other things but that could explain the use of HIV meds. Here’s one source. There’s a few more small studies (65-150 people) that pop up when you DDG it.

https://pubmed.ncbi.nlm.nih.gov/32787459/

The HIV med may not be complete quackery. two studies have made a connection between long covid and presence of EBV. EBV is often associated with HIV among other things but that could explain the use of HIV meds.