For anyone wondering about the drug, it does look interesting. It targets FLMN-A, which is involved in cytostructure (think little bridges that motor proteins can drag stuff along). Tau tangles seem to be correlated with cytostructure collapse.

https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC8294116/

Not a med/bio guy, just interested in Alzheimer's