Don't worry, it's not complaining about it, the opposite in fact. I had a few questions about them.
First off, is it actually possible to make it in a seperate dimension? I was thinking of making a dimension just to go in and kill endermen when I need pearls, without having the side effect of destroying the landscape somewhere.
Secondly, how would one increase the spreading speed? I once made one outside myself to test it out, but it didn't really seem to spread, I just had a lot of rifts next to each other
Thanks in advance, I couldn't find any details about this.