You can't boil a frog
Stop trying to boil the frog.
We use this metaphor all the time. The references comes up in podcasts, the real world, and in all forms of media.
Yes, I get it.
We want to explain a concept to try and push an idea foward. Metaphors have their use.
But similar to a funnel being a dumb term for marketing (everything goes through), the blobfish looking weird (poor fellow is suffering from decompression sickness), boiling a frog is a bad way to describe a situation where people become immune to the changes around them.
Every time I heard this overused phrase my blood metaphorically starts to boil.
A quick Google search suggests a better: "It’s like putting a baby into a crib (do it slowly and they won’t notice)”.