It short because it lead to Meg being murdered who was very a strange choice to murder,
They had to chose 4 people, of those 4 one had to be murdered, and one recieved a shield based on a vote. He was convinced that people liked him enough that he would be voted to receive the shield leaving them to get Meg or ash banished and murder andrew. Imo this was arrogant and poorly thought out just to pin it on ash.
However how it played out was very risky because they picked Andrew who's popularity was under estimated, and Meg who people very strongly thought was a traitor. It was all pinned on the conviction Paul was most popular
He was wrong and wasn't given the shield and I don't think had predicted that would happen, and that Andrew would be more popular than him. The second it happened it ruined the plan
This lead to the situation where the only person in the dungeon that was able to be murdered was Meg ( can't murder a traitor), and pretty much every way you played it was rubbish.
Option 1
You let met meg get banished at the round table. There's no murder that night and it's clear paul and ash are traitors as people would guess that they couldn't murder because they were only two people to be shieldless aren't murderable
Option 2
You let them banish ash. However then you have to murder Meg. Everyone at the round table know that the murder choice is either Meg or Paul.
Meg had lots of suspicion around her and it made no logical sense to murder her. She would have likely been banished the next day, and traditionally you get shifty people banished and well liked people murdered. There was lots of talk that Paul was very likely to be murdered because his personality fit the profile and he had fed into that narrative of saying that he should he murdered the previous nights, it was a miracle he was making it till morning. It would make little sense to actively bypass Paul and waste a murder on Meg.
So when she was murdered, it very much hinted to the fact that she had to be murdered because she was the only option/ their hand has been forced.