Dreadful nonsense. The coronavirus is a picornavirus. This type of virus is extremely small in size (hence the word, 'pico':
https://healthjade.net/picornavirus/
The HIV virus is a retrovirus (imagine a DNA helix back to front, hence 'retro') it acts as a mirror to bodily cells and replicates that way.
https://www.yourdictionary.com/retrovirus
There is no way a picornavirus can interact with a retrovirus or originate or mutate from one.
No, coronaviruses are not picornaviruses in any way, manner, or form. Or vis-versa. Think of it as humans and birds both fit under the very broad category vertebrates, but humans are not birds and birds are not humans.
Most viruses are pretty damn small, and this is not why picornaviruses are called what they are. The name came from them having a small RNA genome, but this is not the only criterion that is used to define what are picornaviruses and what are not. Coronaviruses do not fit these criteria. In fact coronavirus and picornaviruses are far, far more different from one another than are humans and birds.
You know you can look this stuff up online before posting...