Speculating about a public figure's health, especially without proper medical evaluation, is not appropriate and can be considered unfair and misleading. Diagnosing any medical condition, including dementia, requires a thorough examination by qualified medical professionals who have access to the person's complete medical history and current health status.
It's essential to rely on reputable sources and avoid spreading baseless rumors or engaging in armchair diagnoses. If there were any significant health concerns regarding President Biden or any other public figure, it would likely be addressed by appropriate medical authorities or the individual's team in due course.
If you have concerns about someone's health or are interested in accurate and up-to-date information, it's best to consult trustworthy news outlets and official sources.