It's ridiculous lol. Midjourney is optimized for beautiful images, while Nano Banana is optimized for better prompt adherence and (more importantly) image editing. It should be obvious for anyone who spent 20 minutes trying out these models. If your goal is to replace human designers with cheaper options[0], Nano Banana / ChatGPT is indefinitely more useful than Midjourney. I'd argue Midjourney is completely useless…
It is what has underpinned all of human progress towards automation. It isn't a bad thing. Every time we automate something the luddites cry out about the coming mass unemployment. It has never happened.
It has happened each and every time, it just haven't affected you personally. Starting of course with the original luddites - they didn't complain out of some philosophical opposition to automation.
Each time in changes like this a huge number of people lost their jobs and took big hits in their quality of life. The "new jobs", when they arrive, arrive for others.
This includes the post 1990s switch to service and digital economies and outsourcing, which obliterated countless factory towns in the US - and those people didn't magically turn to coders and creatives. At best they took unemployment, big decreases in job prospects, shitty "gig" economy jobs, or, well, worse, including alcohol and opiods.
With AI it's even worse, since it has the capacity to replace jobs without adding new ones, or a tiny handful at a hugely smaller rate.