I can give suggestions to the operator but overall, I don't have much say outside of choosing to write a check and voting with my mouseclicks.
On the same note, if I was an operator of a site, I'd certainly listen to those that help me fund the site. Else, it would be like MCRGO, a formally great pro-2a organization(I don't write up 75 page reports at no cost for just any org) that lost tens of thousands of dollars and activists(including) when 'new leadership' sold out, and then drove out those that made the organization great.
But donations are quite different.
Do blood donors have a right to determine the medical procedures a doctor later uses on the recipient?
Do diners have a right to manage a waitress just because they once gave her a tip?
Do politicians have to conform to rules set by donors? If so, why is bribery considered a crime?