[PerceivedToBe]

Folks, le Quiz Master tried all that he could, many many hints to solve this psychological nightmare...
psychology of hindsight - what should or should not have been done?
the most obvious hint was Voldermort's 6th horcrux - his pet snake Nagini.
in the Half-Blood Prince, Dumbledore pronounced "... to confide a part of your soul to something that can think and move for itself is obviously a risky business..."

the advertising signboard was aged, hence we hypothesise that it had been secured onto the trunk of that betel nut tree at a normal person's eye view a good many years ago. plants and trees grow. hence, the signboard followed the tree trunk upwards reaching for the sky..
hence, the moral of the story is not to secure your advertising campaign on biologicals that can grow and sway for itself

it appears that this time round is a "House Wins"... brave attempts, Everyone... #applause

'twas in Kota Tinggi where we came across this makeshift advertising board, some six feet above my height and i had to pull out me zoom lens to read the signage.
Folks, Creativity Catch Phrase #2021-H2-05 explores the psychology of hindsight.

Phrase Hint - what should / should not have been done....?

It's a challenge for visitors to crane their head n look at the ad board. Given its less contrasting colours ppl could give it a miss. Put it up at human eye level for ease of visibility with reflective materials. 

As for the lamp post it is quite near to the tree and branches may prove a hindrance for maintenance works. Install each lamp posts at standard spacing and away from the trees. The equal spacing apart of the lamp posts will give ample light at night for any board signs to be easily read if there are between them.

Signage too high..
Should lower with bigger board.

Lamp pole cable too near the trees.
Dangerous during heavy rainfall with strong wind.
The trees should be further behind the cables.

Signboard - Repair clogged toilet..

Too high up there to be readable?., 

Should be more noticeable if put it near the shelter pavilion on the left?.,

Lol!.. Wondering if they hired a monkey to put the signboard up there?., 

The advertisement signage serves no purpose as it is not legible. It should have been fixed at eye level.

IMO, the reason for fixing the signage so high is because Kota Tinggi is well known for (sometimes annually) floods, not ponding. The flood water level can rise to an unbelievable height. This prompted the advertiser to fix the signage at that height.

I am not tall...

Final Hint - what was Lord Voldermort's mistake with his 6th Horcrux...?

final call for Creativity Catch Phrase #2021-H2-05.....
reminder - this is a test for the psychology of hindsight

The person installing the advertising signage over estimated the height of viewers.
Raising it too high...

And underestimated the size of the wordings. Too small for people to see from ground level.
Should be bigger font size

Poor judgement on signage  visibility and legibility ..

Advertiser underestimated size of signage and thought is legible to tourists but worker overestimated they could not see it and raised at a height beyond visibility