I’m a PM in a different field (science stuff). If anyone asked me to present on behalf of the science team, I would say no. It’s their work. Managing a team and timelines and budget does not mean I do the work. I think this is why when job searching I get a lot of interviews with dev and other tech. They just want competent managers. Some of them, anyway.
I am a PM in biotech. Please let me know if you’d prefer scientists or engineers to manage people and projects.