Oh dear...I know a gal with Alzheimer’s who watches ‘her program’ every day when she walks her tread mill! She’ll have a tough time understanding the changes.
She can always watch episodes from ten years ago. She probably won’t notice the difference.
Friends of ours had a daughter with severe brain damage from birth. She loved to watch game shows, especially iirc Price is Right. When they heard her favorite was ending they began taping the episodes so they would be able to play them for her after it ended. Depending on the stage of Alzheimer’s your friend has something like that might work or older shows might be online and it could all be new again.
Hopefully compelling programming will take its place. I won’t even use the phrase “God-glorifying” — just something substantive and...cultured.