Crystal Tower raid dungeons are easier than any Shadowbringers dungeons.

If you can clear any Shadowbringers dungeon whether it be via trusts, duty finder, party finder, what have you you can clear CT easily.

This is why people view it as a non issue because by the time you need to have done it (5.3+ story) you are already a good enough player to handle these raid dungeons.

So as Iscah has been asking Why is there such an adversion to this raid dungeon series?, it is easier than whatever you do to cap your tomestones.