Floppycats
Personally, as a Ragdoll cat owner for over 30 years – and having 5 Ragdoll cats in that time, I have never seen the need to bathe them unless they are unwell.
However, there are exceptions to every rule, and sometimes a bath might be helpful if a kitty is sick or got something on their fur that shouldn’t be there – just make sure you rinse all of the shampoo out of their fur.
If a cat is getting older or sick and stops grooming themselves like a cat naturally does, you might bathe them occasionally to keep their coat from getting too oily.
For your cat’s health, it might be a good idea to bathe a cat if they have come into contact with chemicals – for example, chlorine from a pool, a snowglobe, or a household cleaner they might have accidentally been exposed to.