Even though Block Absorber supports some blocks from other mods (like Mekanism, Botania, some of the blocks in Tinker's Construct), the Block Absorber doesn't work on some of them. Like it doesn't support Draconic Evolution at all. Can't absorb ores, blocks, awakened ones etc. Same goes for Tinker's Construct actually. Even though it supports Manyullyn Block, it doesn't support other blocks like Hepatizon Block.

The block absorber only works on blocks for which there are dimlets. You can extend the dimlet package with a datapack.
See https://github.com/McJtyMods/RFToolsDimensions/tree/1.18/src/main/resources/data/rftoolsdim/dimletpackages for the default dimlet packages. You have to make a datapack with your own extensions in

Wasn't Draconic Evolution like a default supported mod for RFTools? Because in older versions, i don't remember needing to add custom dimlets. Also it's even weirder when a block in Tinker's is supported and the other is not. Anyways, thanks for helping!

In 1.12.2 all support was automatic. That's no longer the case. As to only some blocks being supported that because those mods update and I don't have the time to always update these packages