Most likely this will not actually happen, and even if it did your content would still be valuable as an AI is analyzing it in a more nuanced way than just looking for keywords. Which, by the way, is exactly what search engines do.
Technical changes do kill jobs. We always find a way to invent jobs, of course, but that doesn't mean old jobs aren't viable.
Movie theaters once employed professional musicians, not they don't, because movies have audio built in. Obviously a net-loss since musicians are jobs people like. Less coal miners or farmers is probably a good thing though.
It all depends on the type of job you replace. If you replace hard manual labor jobs, you're a net-good. Replacing a job people like... and you'll get a negative label. Doesn't change the fact that progress marches on, but jobs are killed by tech changes.
We will automate some bullshit jobs but create all kinds of new bullshit jobs that have titles that start with AI.
Thousands of titles like "AI ____ ____ Manager" that also does nothing but schedule meetings about meetings about AI.
The mistake to me is to believe bullshit jobs are the end result of some systemic inefficiency that AI is going to automate out of existence. I just don't think that is at all the case because otherwise we would just cut so many bullshit jobs right now without AI.