"It is really not the right time to experiment with fiscal policy," AXA chief economist Gilles Moec said about the UK's moves, assessing that Monday's U-turn may have appeased "the bond vigilantes for now".
The term, bond vigilantes, refers to debt investors imposing fiscal discipline on profligate governments by forcing their borrowing costs higher.
Ed Yardeni, who coined the bond vigilantes term in the early 1980s, penned a blog post saying "They're Baaaack!"
Even U.S. President Joe Biden was speaking the bond vigilante's language at the weekend, noting he wasn't the only one that thought the UK plan was a "mistake".
"This is probably the biggest example in practice of the bond vigilantes activity," said Antonio Cavarero, head of investments at Generali Insurance Asset Management.