The end of the Baby Boomers will very likely mean the end of soap operas, as baby boomers are the absolute majority of a soap operas viewership, as most middle aged and younger women are no longer housewives by occupation.
If anything though I’d say it would more mean the end of that kind of scheduling - the soap opera type of over the top storytelling will live on. (Pro wrestling is basically the same just with people pretending to hit each other, for example)