It’s already faster to get to clearing for jungle starts, imo, because the thing you are clearing for is plantations, which are on the same tech, rather than having to get mining too. Connecting a jungle sugar takes 3 tech while connecting a forest sugar takes 4.
That said, I believe some map scripts (Communitas and Milae's) do put down jungle mining and quarry resources. In that case, jungle clearing being a 2nd tier tech makes for a very slow start indeed. You need 6 techs to connect a jungle amber. And before you say those are non-standard settings so screw 'em, Communitas is packaged with VP by default.
On a Firaxis map, moving jungle clearing forward doesn’t change that much, except you could get a head start on clearing jungle before you have unlocked plantations.
I would argue that jungles are hard not because it takes time to get to their clearing, but because their yields suck, its slow to move through them, and cutting down jungle takes forever in worker time.
jungle is also made even weaker in communitas/communitu, where it is changed to 3 food.
Jungle clearing even earlier is robbing them if their uniques and effectively a difficulty lowering without any rationale.
The reason this was changed was that many in the community felt jungle starts artificially
Raised the difficulty of the game from what they had set in the options. I think the majority of contributors would take issue with the idea that lowering difficulty back to what the player had asked for is somehow a bad thing.