Probably, but I also doubt that all of those are just incorrectly translated. Nevertheless we just have to wait for Tensura Fan to translate them.
I'm well aware of the possible inconsistencies that might appear. Hell there are already inconsistent low-end feats in the previous volumes (Rimuru's sword slash only being "near the speed of sound" during his fight with Hinata, Shion launching supersonic projectiles are considered impressive by Reynald Jesta, and Rimuru not being able to travel at hypersonic speeds in Volume 10). We just consider them as outliers because MHS and Relativistic+ are more consistent throughout the fights and it wouldn't make sense for them to be even supersonic, let alone subsonic. Edit: I'd also add that Rimuru's attack speed being subsonic came from Yen Press, which makes the entire thing dubious.
I'm convinced that FUSE is trying to nerf them but has no idea how to keep their speed ratings consistent. Hell, if the manga ever reaches Volume 11, we might even get FTL results if we decide to calculate Hinata intercepting Melt Slash from a distance (though personally, this would also be an outlier/inconsistency and I'd rather stick to Relativistic+ for Hinata). I have no idea how
reactions are measured, but I'm certain that Rimuru's Thought Acceleration with Ciel exceeds the speed of light by a huge margin even just based off the fact that Raphael's can perceive attacks that are almost light speed and Ciel's is 100x that speed.
Tl;dr we just find a middle ground where the ratings make the most sense, eventually. And fill the profiles with necessary details.