When someone gives away their content with advertising attached to it, they are gambling on one important thing and if they screw it up, they are out of business.
Media outlets lost sight of this and it cost them money and readership. Ad blockers aren’t the problem at all.
I promise you that ad blockers aren’t hurting media companies as much as much as they hurt themselves with poor management of their own business. I don’t see ad blockers as immoral.
I see them as a signal that media companies don’t know how to run their own business to deliver meaningful value to readers and advertisers.