Have you tried throwing AV or Flux Nades at dropships? They are less than effective. Dedicated AVs still have a purpose; Assault FG is the best AV weapon in the game capable of taking down any vehicle the fastest, and is also useful against infantry. Swarms allow you to hit any vehicle from a distance with Lock-on and they can't hit you back, and with Contact Nades you aren't even that vulnerable to 1 vs 1 encounters.

Fused Nades(or Thunkers) will be the go-to grenade starting now against infantry, and if you're not using them, you're going to be at a noticeable disadvantage against infantry that do use them. You're sacrificing that to for the ability to make tankers retreat if you're alone. You always take a risk when using Flux Nades; as anti-Infantry they are inferior to contact Nades, and as an AV weapon, Armor tankers laugh at them.