To be fair, a lot of HQM packs try to
make every mod require every other mod ("want to make a shaft? You need a silverwood wand core!"/"What do you mean, I need an ore magnet to craft a pulverizer?"/"Why does the recipe for a sludge boiler include a singularity?"), and I am not willing to allow this with RC. Additionally, I find it to be terrible design, and more of a lazy "look I made balance" attempt than anything requiring real design effort.
Editing the techtree does not usually cause crashes. It causes things like dependency loops or exploits, neither of which are going to be reported with "oh yeah, I changed this".