Well I can tell you this for sure.
The patch is created with the intention of stoping cheats, adding functionality and preventing exploits... As far as server admins are concerned, unfortunately we can't really control how or what they do with the patch. There has been talk even internally within our community that there are some server admins that "falsely" ban users just because they're very good, or they give themselves an advantage over other users on the server. I CAN tell you, that there is nothing in the patch that would give an admin any advantage over any other user on the server, but sadly, it still doesn't stop a admin from creating a mod using our new features and cvars to create something that could potentially give him an advantage.
The issue is though regardless of whether or not they use the reborn patch, it still doesn't stop them from creating a mod to give them an advantage. They can still do it with the stock 1.11 patch, so I wouldn't say that servers using Reborn necessarily have "jerk" admins.
I hope this makes sense to you.
As far as giving "us the devs" access to other servers, that is absolutely false information. We have no intention of that. The only thing we do, is pull statistics so we know which servers use our patch versus 1.11 version. This however does NOT give us any sort of access to the server to take advantage of it. If someone has come across some exploit that allows this to happen, I suggest that it be reported immediately so we can fix it, because we certainly would not want something like that to ruin the credibility of this patch.
Thank you for voicing your concern. Maybe RazorRapid can add something to this, but I assure you that the word of mouth are only rumors. If there are any other questions or concerns you have, please let me know.
Thanks!