They or whoever can publish whatever opinions as they like.

If they can't tell why earth has been warming since the last ice age, why would you take them seriously?

My Ph.D. advise, who is an accomplished scientist, told my fellow students and I: >95% of scientific publications are trash and should not be taken seriously.

When you can't define global temperature, you can't say how accurate your measure is. Whatever you say after that is meaningless.