Recognizing that AI systems have increasing levels of agency is not necessarily personification. The analogy to a chisel is not a good one - a chisel is a tool with no agency.
AI agents are black box systems that can behave in completely unpredictable ways sometimes. Someone may prompt an agent to perform a seemingly straightforward task - but it may come up with a creative, bizarre, or even harmful approach to reach the goal that was not necessarily foreseeable by the prompter.
The story of a Monkey's Paw or Pandora's Box is an archetype as old as storytelling. The moral is always, don't mess with powerful stuff you don't understand. Curiosity killed the cat.
Does treating them as pets make for a better argument? Pets have agency and can behave in unpredictable ways. If my pet damages someone else's property then I am held accountable. I may not have foreseen how my pet could have caused said damage, yet I am still held accountable.