AZT suppresses HIV?

The notion that the AZT suppresses HIV is questionable

As the existence of HIV is questionable, the notion that the AZT suppresses the virus is also questionable
- Even HIV-negative people’s CD4 increases once they take the AZT

Questions

Questions
Currently diverse medications are using rather than the AZT(Zidobudine). What is the difference between the AZT and current ARVs? The current ARVs are as much toxic as the AZT? What is the reason ARV increase the CD4 level?