Yep.
Federation starships were from that point limited to no faster than warp 5.
But I noticed that they frequently broke that speed limit when it was inconvenient for the plot.
After that, it was completely ignored.
(Liberals do seem to paint themselves into corners often, don’t they?
Kirk would have laughed at the idea of being limited using warp drive.
The Federation leadership was galactic level stupid anyway.
I figured that once they had Scottie back, he came up with scrubbers for the warp drive. ;-)