You used to be able to buy cork squares and there was a time when people glued thise squares to the wall to make one big bulliten board. Then when they needed to sell the home the agent adamantly demanded that it be removed. I was chosen one time to do so.
The cork would come off, but the glue and the resin from the cork would not budge. I ended up re rocking the walls with 1/4 inch drywall to cover it.
In more direct response, I never comment on any post unless I have direct on the job experience with a particular job. I speculate on some jobs and title my comments "pure speculation". So, when I comment, I did it.