>What is your suggestion, that they should abandon all analytics

Ideally, yes. Or at the very least don't use Google for it. Use something like Pwiki instead. Or perhaps try actually allowing your users to decide what if any information they feel comfortable sharing with you.

There are other non-profits like the Wikimedia Foundation and the Internet Archive whose websites still somehow manage to function despite not triggering any of the multitude of filter rules that plugins like uBlock ship with.