Presumptuous and judgemental

If I see someone litter on the street, I'm going to assume the worst of them, because littering is bad. If I see someone kick a puppy, I'm going to assume the worst of them, because kicking puppies is bad. And if I see an event using "AI" for its promotional material, any of it, I'm going to assume the worst of it, because using "AI" is bad. There are certain things that, when done in view of other people, will almost universally turn them against you. Your own promotional material should not be one of these things, but using generated images makes it such. If you don't have the time or money for a fancy flyer, you use simple word art tools (of which there are many free online), or even just print out a paper with information in plain text. Even that would endear more people to your event than using an image generator.