No offenses to anyone who helped in creating the pre-set of log in messages for OPs to pick from, but the current options to pick from are honestly bad. Not only that, but it feels like some are made /specifically/ for one OP, such as "%rank% %user% thinks that windows server 2019 is the best server OS".
Not only are the presets to pick from bad, but it costs 2,500 coins to unlock the thing. To put that into perspective, that's 250 successful reactions, or 32 days straight of voting on all platforms for the server. If anyone accumulates 2500 coins, they probably have already poured a /lot/ of time into the server and I believe they could be trusted with simply setting a silly little message that appears when they connect.
If even through all these efforts the few players that have access to it still sets their login message to something bad or offensive, an admin could easily take action, just like they are currently moderating tags and nicknames.