Walks in - Calls one of the strongest subclasses in the game situational - Refuses to elaborate further - Leaves
Also, healing is definitively the strongest quality of the Peace Domain.
If they think that a tricky to use healing high five is better than your whole party getting 1d4 (or 2d4 when stacking with bless) to every d20 check, then this person doesn't know shit about dick all. It's arguably the strongest level 1 class feature in the entire game.
Twilight is often considered overpowered and is occasionally banned, including at one of the tables I play at.
Well, you see, it's highly situational. It's only really impactful if you're around people who will be rolling 20-sided dice, and most people won't find themselves in that situation most of the time.
Autognome Peace Cleric with Bless. What a useless thing it is to have 3d4...
These people never consider the always prepared spell list when they write this stuff. The ten spells that the subclass adds to the cleric's kit are a vital part of understanding how powerful that subclass is.
Take Trickery cleric. (A certain goblin who visits this place is a trickery cleric.) - the "I can make a silent clone of myself" feature isn't that powerful... it's sometimes helpful as a distraction, and sometimes helpful in combat to deliver touch spells, but it's concentration which makes it hard to use effectively. It's especially hard to use at higher levels when you want that concentration slot for other spells. However! Trickery cleric gets disguise self, dispel magic, blink, dimension door, polymorph, and modify memory, a whole host of useful effects that largely sit outside a cleric's normal capabilities. Trickery is quite a powerful subclass purely on the strength of the extra spells, not because of its regular features.
Oh, and they also get Pass Without Trace.
Twilight domain gets Sleep as a domain spell - that's really good at low levels, and if your DM likes to provide complex or weird situations, it's surprisingly handy. In player surveys, Twilight Domain is viewed as the most powerful cleric subclass.