Seeing Mushoku Tensei's creator loudly refusing to bend the knee and submit to the demands of delusional and psychotic people who obvious hates him is definitely a welcome, and more creators need to understand and emulate this.
You also know you are doing the correct thing, when these people froth at the mouth, threaten and attack you and unironically call for your enslavement and/or colonisation for merely saying "my fictional work, I do what I want!"