Its the fact that CP was replaced with SPS as it was deemed 'a terrible idea in the first place'. Now you want to bring it back in. If this terrible proposal goes through it would be nice if you limit it to the SPS rewards. Glint rewards don't give SPS like the old chests did so why cut ones chance to grow their smaller account with soulbound cards?

TLDR: As you said, again smaller accounts get shafted.
If it passes, make for SPS only, not glint rewards.