But that means it is not simply finding what others have already posted and discovered. You are saying that man, given greater computing speeds would have been able to solve this, but we don't have greater computing speeds, so without AI we never would have solved this.
Tell me, who has a job where faster computing speeds would not help?
The problem of AI is not when it replaces 100% of people, it is when it replaces 20% of people. We are already at the point at which the proof of concept for AI has been proven that it can replace 20% of the work done by humans.
The second issue is not whether or not AI can replace 50% of our creative ideas, but rather can it replace 50% of the work required to accomplish those ideas. The reality is that the time spent getting a "flash of inspiration" is probably 1% of the time required to build that thing you just envisioned. So even though AI can do 20% of the work today, when you calculate it by hours on the job it can do 50% of the hours.
The third issue is manual labor. There are as many as 20 million blue collar workers in the US. Getting a flash of inspiration is not in their job description. Elon Musk is building Tesla robots specifically designed to take those jobs. Tesla robots are priced at a lease rate of 25k a year. You don't have to pay for benefits and these robots can easily work 100 hours a week. That works out to $5 an hour, no sick time, no overtime pay, no benefits, no liability and no viral videos of them that damage the companies reputation.