Because this is a jobs program and taking care of old people is a job we all have to do at some point
I get that senior care is a huge issue. The more than can be done to keep them in their homes and out of nursing home rackets the better for everyone, including the govt that usually foots the bill through Medicaid.
That being said, this probably belongs in a healthcare bill. When you're promoting this as an Infrastructure Bill, the majority of funds should be allocated to bread and butter infrastructure projects - roads, bridges, airports, ports, pipes, green intiatives, etc.