They do however often have acid or fire arrows at least. Seen that a lot. I do not know whether they have them on person, but they do fire them. I am torn on this, it is a tactical feature, and it can be useful. The candles, however, well that is a bit over the top. Dippng is a bonus action though and therefore a resource, generally worth it and is not infinite either, it seems to last only a round or so, when done out of combat. In the end, isn't it like the Flame Sword spell?
Something like that. And I definitely don’t want bonus action Flame Sword spell for everyone. I’m not against occasional terrain effects and barrels, but currently there’s too many of them. I want my class abilities to have a meaningful effect, not just exploit the terrain for similar or better outcome.
