As you may already know, Mojang has changed the lead in recent updates, and now, using a firework rocket while elytra flying with any leaded mob will cause the lead to break instantly. This is to encourage the playerbase to use Happy Ghasts for mon transport.

I've always liked every single addition they've made through the years, but THIS, this is just unacceptable to me. I feel like if Mojang wanted the happy ghast to be a viable option for mob transport over long distances, the happy ghast should have a speed boost because 3.6 m/s is slower than literally just walking.

[the allays took me over two hours over 26k blocks using said happy ghast method, nether transport not an option yet]