We'll move into other places, Twitter for instance. It won't be easy at the beginning but hopefully we will be able to move a part of our audience. There are so many people complaining about this that Tumblr may aswell go back on his steps, even though I doubt it.
I think still you will be able to post soft adult content but for me Tumblr and adult died a year ago when changed the algorithm. I remember the days when I earned 300-500$ a month using 50 Tumblr accounts until the september- octomber 2017.