Due to the feedback and some excellent discourse from community experts on the subject, we’re going to re-assess the warnings for Crunch!
Textures are hard. There’s several caveats to using Crunch, or BC5/7, or High vs Normal, etc etc. A flat recommendation does a disservice to specific setups.
As such we’ll re-assess this implementation and will get back to you soon with a more clever solution.
Notably, the ASTC recommendation is staying, because that one’s kind of a no-brainer.