Older brother is a kilt kop

[Tobus]

Because the post wasn’t meant to be discussing that at all, read the original post.

It’s more like wearing two coats over each other or a cape over a coat imo but ok.

The way I read your original post, you and your brother were disagreeing on whether trousers under the kilt was right or wrong. He may have other issues with kilts and Scotland, but this is the main issue you posted. Then you asked how to deal with him. Given that the trouser thing was the front-and-center issue, I'm unclear as to how you figured it wasn't meant to be discussed.