Any time things like this have happened in the past, a huge number of jobs have been created, and the impact on existing jobs has been less than expected.
Illustrators – midjourney isn't going to replace great illustrators, it's going to allow more companies to have more illustrations, replace some use of stock illustrations, and aid productivity for illustrators in helping them churn out ideas that can be turned into more specific/tailored illustrations.
Copywriters – GPT/etc aren't going to replace copy editors, they're going to allow many more people who wouldn't otherwise hire a copy editor to have better copy, and to aid productivity for copywriters, allowing them to move into more of a supervising role.
Operations analyst – I'm not sure exactly what you mean by this, but if it's business intelligence, there's nothing anywhere near ready yet. These tools don't provide insight, they provide on-demand content that a human can curate for real insight.
In general, these tools will act as productivity aids for the people already in these professions, allowing the jobs to evolve over time. That's not just at the top end but also at the junior end. More people will be able to make use of generated content for free, but they'll all find that it takes time to do so effectively, and find that eventually roles need to be hired for.
If you're currently deciding not to hire these roles because they can be done with GPT/etc already, then I think you're either not quite serious about hiring for these roles, don't understand what goes into them, or have needs that are only marginally above those fulfilled by stock photos/illustrations etc.