This plugin gives you the ability to disable the use of firework rockets when flying with Elytra. While still leaving the use of elytra to negate fall damages and walk fast and also using fireworks for other uses such as crossbows.

Bypass Permission: disableelytra.bypass

There are currently no commands or config, but if you would like me to add, let me know on my Discord at SleepyStew#7777.

When you try and right-click an air block while flying with Elytra, it will cancel your click and send in chat in red "Elytra Rocket Flying Is Disabled!"

Hope you find this useful!