...actually I'm not sure about some of the mathematics in there: for a start the quoted ratios for Rsynchronous/RRoche do not agree with the values they give.
If you work it out this ratio turns out to be independent of planetary mass, so the condition for Rsynch/RRoche<1 turns out to be an upper limit on rotation. For icy satellites (~1000 kg/m3) this turns out to mean requiring the planet has a rotation period less than 12 hours, for rocky satellites (~3000 kg/m3) the limit is less than 7 hours, which is faster than any of the planets in our solar system.