You've probably noticed a trend amongst conference organisers to start saying 'no PowerPoint' or 'no more than three PowerPoint slides'.
Poor thinking. When PowerPoint became available, teachers, lecturers and anyone who stood up to talk to an audience was expected to use the software. Why? because (apparently) it made them professional. That's what we wanted: professional presenting. Then the art of talking to an audience was lost as people become too involved in the technology so that now PowerPoint is synonymous with dull, 'reading off the screen'.. But of course it needn't be.
Refuse to follow any guidelines about PowerPoint. But insist on giving a great, interesting stimulating talk. Which may or may not include PPT slides.