World Tree Energy Extractor effect

[Nagamaki]

I've just reached the extractor on the tech tree in normal mode and I'm wondering if there are any actual negative effects from using these? The release notes say they weaken the tree but I'm not seeing any visible effect, am I missing something and/or will there be some impact later in the game? The only mention of the extractor here is in relation to failed golem spawns, could that be the intended consequence? If so, it seems pretty trivial to temporarily remove extractors when you want to spawn new/replacement golems.

[delraith]

It's unclear.

In Rogue mode, the game either isn't long enough for the penalty of world tree sap extractors to trigger or it isn't enabled in that mode.

In normal mode which I only played through once, it looked to me like you just couldn't spawn golems in the last three stops. But maybe it was the sap extractor, idk.