I've seen plenty of people at my job that have tried to spice up their research seminar slides with some chatGPT-generated images, the only time they don't suck is when someone uses the images as a joke. There's always something blatantly off, such that the output is only usable for informal seminars. On the other hand, the approach of having an LLM produce a python script, or write out a PPTX directly with placeholders and "vector" flowcharts etc, is now a very common approach for us.