That is unfortunately a bad practice but there also people out there who leave it in enforcing mode and actually make an effort to use it.
I think selinux use has increased lately, at least from my perspective.
Where I work I am constantly forcing it on people and volunteer to solve any problems they might have to ease their transition.
Just like pledge would require passionate developers who actually care about implementing pledge on the application level, SElinux requires passionate sysadmins who actually care about using it, and about their co-workers using it.
I think selinux use has increased lately, at least from my perspective.
Where I work I am constantly forcing it on people and volunteer to solve any problems they might have to ease their transition.
Just like pledge would require passionate developers who actually care about implementing pledge on the application level, SElinux requires passionate sysadmins who actually care about using it, and about their co-workers using it.