In general it may not change much, but I imagine there will be more people that will continue to walk after the crisis is over.
For me it depends on the course. Some courses are just too hilly and/or long to walk. Others can be perfect for walking.
How is electric bicycle going to help you exercise?
But seriously, at least for me, carrying seems to be a lot easier on hilly courses. I've done both carry and use push carts. But I found carrying is a lot easier on hilly courses. On flatter courses, hands down push carts are easier.