I was asked the same thing this morning on the Fediverse, so please allow me to paste my response from there and edit a bit for consistency.
Why would the grassroots have transparent finance when the GMAFIA does not?
It makes me uncomfortable to have a ‘transparent’ startupy system becoming a standard in the community.
OpenCollective is totally fine with abusive Californian startups, it seems to be part of their normal behavior if you refer to their introduction.[^1] The perspective they put out in their last paragraph looks to me like product placement, but more importantly demonstrates a collective individuation that is certainly not compatible with the spirit of cooperatives, the commons, nor ending capitalist dominance.
This kind of thing I disagree with, so I prefer not to use them nor recommend them.
There are cooperatives that can work as well. Not sure which.
[^1]: from https://opencollective/about:
" But just like we won’t wait for self-driving cars to become ubiquitous before calling a Lyft, we’re very practical about using existing services to solve problems right now. We can already get pretty far using well-established technologies already integrated with global systems. "