The article does do that. Towards the middle of it.
---
Once someone has said “It’s (really) none of my business, but...” it’s entirely permissible (if slightly rude) to reply “You’re right, it is none of your business.” It’s also reasonable to reply “Well, then, don’t!” to someone who says “I don’t want to make you feel uncomfortable, but...”
---
That doesn't work as well for others, Imagine "I am not racist but ... " <interrupt> "Oh, but you are racist". So now you accused someone of being a racist. Sure you have stood up and called them on their racism, but you also created an enemy. Sometimes it is worth it, sometimes it isn't. Depending on the situation.
Or for example "To be perfectly honest ... " <interrupt> "Oh but you are not honest". Well now you are the one accusing them of dishonestly simply because they started the phrase with a stupid "but-head".
I think the point of the article is that some such phrases should raise red flags. They are not 100% proofs of lying or deceit.
---
Once someone has said “It’s (really) none of my business, but...” it’s entirely permissible (if slightly rude) to reply “You’re right, it is none of your business.” It’s also reasonable to reply “Well, then, don’t!” to someone who says “I don’t want to make you feel uncomfortable, but...”
---
That doesn't work as well for others, Imagine "I am not racist but ... " <interrupt> "Oh, but you are racist". So now you accused someone of being a racist. Sure you have stood up and called them on their racism, but you also created an enemy. Sometimes it is worth it, sometimes it isn't. Depending on the situation.
Or for example "To be perfectly honest ... " <interrupt> "Oh but you are not honest". Well now you are the one accusing them of dishonestly simply because they started the phrase with a stupid "but-head".
I think the point of the article is that some such phrases should raise red flags. They are not 100% proofs of lying or deceit.