The % of peoples hospitalized that were under 65 was 55% of the total population in the last CDC report so it would seem HC resources still get taxed.
As to the death rate, while you're right that seniors would hopefully be very vigilant, many of them are still going to go out and about to get supplies or handle various business. I would expect their numbers to go down but couldn't really even guess by how much, especially if living in higher density living conditions like apartments or retirement communities
Edit, the CDC source I'm referencing which I believe is the most updated on the topic https://www.cdc.gov/mmwr/volumes/69/wr/mm6912e2.htm
As to the death rate, while you're right that seniors would hopefully be very vigilant, many of them are still going to go out and about to get supplies or handle various business. I would expect their numbers to go down but couldn't really even guess by how much, especially if living in higher density living conditions like apartments or retirement communities
Edit, the CDC source I'm referencing which I believe is the most updated on the topic https://www.cdc.gov/mmwr/volumes/69/wr/mm6912e2.htm