If it is not possible, I strongly suggest making it possible. Top in my experience has been more useful than hot and it's annoying to have to click on it for every post
How do you access lemmy? I use connect for lemmy on iPad and android. It has an option for default sort type for comments and posts. Unfortunately, scaled is not yet an option, since it was introduced in lemmy, but hot and top are options.
I wish this were added to the official web UI too. I know they probably have reasons against it but just let us choose for ourselves. They can leave Hot the default but I do think the votes matter and the highest voted comments are usually worth reading.