I agree with you on helping teach others as far as the basics of a proper rotation goes. The strange attack patterns and "rotations" I've seen from other party members have astoundingly went up since Stormblood's release.

The problem is people don't take initiatives to read up guides or desire to improve like you do.

You can refer players to reputable guide providers like MTQCapture, MrHappy, Xenosys Vex, Graehl, or some detailed written/video guide that literally spills the secrets on how fights work move by move, phase by phase. The issue is that the people who could use the battle hints still don't want to spoil or improve their knowledge of the higher-end battles.

You can provide links to the best linkshells, free companies, discords, or other forms of voice chat to communicate, teach, socialize, and/or share new stuff that could help improve gameplay. The problem is that some of people who probably could use those mediums to improve simply do not care at the end of the day.