I do think they're doing their best as well.It's not like they're sleeping on the job as it is. I'm sure they're already doing their best. It's just that their best isn't enough. It's not an indictment, but we knew from the beginning that no one was going to be able to continue Berserk like Miura did.
But good feedback can always point someone to a better direction.
For example, I have an art Discord where everyone is constantly asking for feedback.
Most of the artists there have improved a lot after listening to solid criticism (including me).
Now, I know this is very different than a legendary manga whose author have passed away. But nevertheless, they are asking for feedback from the episodes, so they're probably open to both praise and criticism (whether or not they will change something according to that is another story though).
Having said that, I already knew that the storytelling wouldn't be the same without Miura (like I said in another thread).
The guy was master at storytelling, he knew how to keep the reader engaged and experiment with a lot of different ideas.