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This is not the point. The point is about deterring lawsuits. The point is not about defending lawsuits. This is very clearly explained in OP.

Sounds very small-penis.

It also makes zero sense. You don't have to admit that you have a small penis to take legal action against someone that writes an insulting version of you with a small penis. People are not identified by their penis size.

I don't think it would be me accusing you of having a small penis (since of course you don't). It's me accusing someone named romcade4321 of being a generally shitty person, and also having a small penis. If you think romcade4321 is a reference to you, you would have to prove the similarity between them and you (maybe by dropping your trousers in court?)

I don’t think you’d get to use the courts anymore.

Yes, only men with small penises are allowed to court.