I was producing for my radio show today.
The host said, “Alltimer’s.” He lived with the issue personally as he had a parent who suffered from the disease.
The guest, the expert in the subject, said, “Alzheimer’s.” Because that is the actual name of the disease.
The show was an hour long, and neither interrupted or interjected about the pronunciations.
Because everyone listening knew exactly what both of them were talking about.
Maybe you grammar nazis might want to take note. Or not.
If you feel the need to fight me on this, email me at firstname.lastname@example.org.