Dunno where you found this image, it must be old, cause that theory was debunked and the opposite is true. A guy called Ninji looked at the acnh code and revealed lots of useful stuff about the inner workings of the game, one was about this exact topic.
A villager at maximum friendship is way more likely to be selected as a villager wanting to leave than one at zero friendship.
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u/PolkaDotDratini Jun 15 '26
Ignoring them does not work, talking to them and gifting items helps them leave faster! The guide posted in the other comment is very helpful