Yes, you are right, accusations will always come to anyone, even a trusted gambling platform, which is normal. But as you said here, whenever accusations come, are the accusations based on solid evidence or are they just playing a word game. Now is the age when all things must be proven with strong evidence. The reason is that everyone can say anything about the gambling platform, for any reason. However, until now all the accusations that point to it seem to backfire on the accuser because they cannot provide authentic evidence. Moreover, the casino also responded well.
With an individual gambler, you can make accusation against a casino, attach many screenshots and even can fake them. Because you have nothing to hide, nothing like Non disclosure agreement, GDPR compliance for your business and so. A casino has many things to follow according to their business license and they can not attach any screenshot of a user profile, bet activity, bet log to this community or on other gambling forums.
Support will be done in their casino, with support ticket, email or if it needs some third party mediators to solve difficult case, it will be done but not publicly with all information for everyone to see. It is important for a big casino to protect their reputation, users and income so they won't careless make decisions against their users. Decisions would be made very carefully by a big casino so chance to have mistake from a big casino is very small.