Truebox is complete trash to be frank, it's one reason why I largely told myself I was done doing "serious" TLP after Agnarr, and I broke that vow for Selo basically because it was a very unique opportunity, outside of that I've basically only touched TLPs very casually.
The core issue with Truebox is it is a system built to appeal to people who are triggered by losing a camp to a boxer. The reality is good players don't lose camps to lone boxers and they're easy to push out of a camp. So these are you basic cuck players who cry because they saw a boxer and their little friend group of 1 Rogue, 1 Shaman, and 1 Druid trying to take a camp from a 12 boxer couldn't figure it out.
What Truebox directly causes is a scenario where "real" cheaters box with impunity and derive huge benefits from doing so, as they use programs to bypass truebox and automate their characters they can do all kinds of stuff regular players who just want to abide the rules cannot do. So for all the eras in which "concern cucks" are "concerned" about boxing, you're giving a free gift to RMTers and other botters. Then when that era starts to end (around PoP-GoD) you basically create a situation where a huge % of the server can't easily continue playing because a group of at least a few characters is needed to do much of anything in EQ even today at live at 115, and basic server dynamics start making groups harder to just throw together casually aroun this time. You're tanks and melee dps, the ones who with raid gear can most easily start to anchor a box crew, will around this time work out ways to half ass run crews under truebox rules, and the rest of your guild will largely experience grouping past that point as an experience in which you're basically asking a boxer who doesn't need anything you offer to please help you do content. Compare this to how in real EQ played on normal SOE servers from the year 2005-2021, people just made additional accounts to get through this stuff.
So in short Truebox actually just benefits RMTers and cheaters in the first 4-5 expansions of EQ and then creates server population issues that just grow over time for every server once it's out of those early eras.