Eh. If you don't want to donate, don't, but I don't quite get the outrage here. The Wikimedia Foundation is still small as far as charities go and is visibly making Wikipedia better: the new UI is a breath of fresh air, and given the insane complexity of MediaWiki markup, the visual editor is a piece of unimaginable technical wizardry. Wiktionary is an unheralded gem and even Wikidata is starting to be genuinely usef…
Why do I need a proxy for charity? If I want to give to some cause I will do so directly.