Thank you @ajayyy, and right, I understand that...
However, in an indirect way, the witnesses do control when Steemit, Inc. will update the condenser. As I best understand it, the condenser people are waiting for more witnesses to adopt 19.10 before a condenser update.
I am not familiar with esteem surfer, but I will look for it.
Meanwhile, @timcliff has published a provisional condenser that allows editing... So I am very happy at the moment. :D
Yep, they are waiting because, if not enough witnesses update, then editing a post will take 20 - 30 seconds to submit.