No. Avocados are ready to use when they yield just a bit to your thumb’s pressure, but not so easily that the avocado is squished.
You can also try this one without any of the muss or fuss: look for avocados with dark (almost black) skin and spots on them – these ones will be more ripe than those with bright green skin which haven’t turned yet. The flavor of avocados ripens as it turns darker; they will also become sweeter too over time if left on the tree longer…