While recyclers are nontrivial the only real cost is a bit of electricity and a few resources into a chain of recyclers. Once power is trivial, the difference in voiding by recycler or spacing becomes trivial enough that I say leave it. It is equivalent to voiding in lava. The real power is in the voiding, not the method.
I disagree on that.
Recyclers come with a logistical issue of space. Something like red circuits requires multiple rounds of recycling, or several recycles. This is actually a very big issue on Cerys as its so small and has the cold mechanic and immovable structures. so voiding directly into space does trivialize a lot of the challenge.
Vulcanus allows voiding into lava because doing so does is essential to not break game chains, as voiding stone would be impossible unless a player goes to Fulgora first for the recyclers.
It's intended. You raise a good point, that voiding complex items by recycling is nontrivial, and we're missing out on some gameplay.
I'd love more feedback from players on whether this feature is neat or cheap.
If its intended, then perhaps a way of making it harder to achieve or use? so not having as many radiators that reach all the way to the edge.
or restricting it to long inserters as they are much slower then stack and bulk inserters (not sure if technically feasible with the game code)?
or somehow restrict it to specific items that can be thrown off, like just the basic plates and plastic?
or introduce a chain with methane that burns items off as a type of different voiding that returns nothing back?