especially if you don't genuinely believe in them at all? Many people complain that a religious organization regards them as inferior for being LGBT or female, yet remain in that religious organization and presumably even throw something into the collection plate. Such people give the sanction of the victim to that organization.
Others claim that they are working to reform a religious organization from within. Good luck with that. Some of the finest theological thinkers in Christian history either could not or would not reform their churches from within and ended up founding new denominations. Moreover, a church that survived the Reformation has little to fear from the cheap publicity stunts that so often pass for protests against Catholic doctrine. We must weigh the probability that such publicity stunts will achieve their goal against the probability that they will have unintended consequences - something that the nimrod who dropped the Eucharist on the floor of the cathedral evidently forgot to do.