Describe the bug

When traversing the nether, it isn't uncommon to come across deadly (poison+wither+blindness) sulfur chunks which occur due to there being a high concentration of sulfur from onyx pockets aboveground in the nether roof. Due to this, some places are outright unapproachable as a result, and this doesn't happen rarely at all—it's a very common sight, or lack thereof.

To Reproduce

1. Traverse the nether in spectator mode.
2. Find several onyx pockets in a few adjacent chunks in one area.
3. Go into survival mode in the area right below these pockets.
4. Suffer.

Expected behavior

I expect these sulfur pockets to be a bit more sparse and spread out instead of more common than nether cities and fortresses combined.

Screenshots

Modpack Version

Other

Server or singleplayer

Server, Singleplayer

Version the world was created on:

Other

Other...

v.3.2

Additional context

It is already planned for these to be toned down a little bit.