Often, when posters ask for evidence, each poster has their own hidden criteria of what they will accept as evidence.
Perhaps only an outright admission from a GB member or documentation that the GB's actions and decisions are made with bad intent will be acceptable, but that is not likely to happen. Even when written evidence exsists (ie: UN proof of association letters and web page) JWs will usually automatically claim it was a fake document, created by 'apostates' to discredit the org. When ex-JW forum members respond to such evidence requests to provide examples in terms of the consequences of GB decisions and actions and GB attempts to conceal, mislead or outright lie (Geoffrey Jackson- ARC testimony) with regard to negative consequences, those examples are usually poo-pooed by the original poster when they don't meet that poster's undefined criteria.
Not everything is Black or White, Good or Bad. Just because the majority here consider the religion to be a cult and its leaders act dishonestly and arrogantly, does not mean everything they do is wrong, or has bad intent.
When honest mistakes are made, honest people will admit to those mistakes and will usually take steps to correct matters to prevent the same mistakes from being made going forward. What mistakes have the GB admitted to?
You ask for evidence, but the GB provide no actual evidence they were appointed by God nor that God or Jesus chose the JW religion as an earthly organization, yet, most active JWs continue to give their blind faith that everything the GB claim is 'The Truth' and has God's support and approval.