we wouldn't have things like PiSed-up and PiSlamic state.
PiSed-up is already banned. Pislamic State would most probably be covered by the expanded rule too; although it names the structure created by PIS and does not actually rename PIS, I'd be happy to see it as being covered by the expanded ban if that helps the rule be expanded.
What is racist about it?
You are using it as a derogatory term based on the ethnicity of the editor, therefore it is racist.
Is that the same Bolek as the Polish one ?
So, clearly the use of a changed name instead of the real name of a Polish politician is causing confusion. It's hard to see why the mods allow 'Bolek' to be used, given that it clearly breaches even the existing unexpanded rule.