I couldn't find any threads on this, suprisingly:

What about adding an option for underground attacks so that they can't resurface on or even traverse paved ground?

Maybe bricks can protect against low level burrowers, concrete against mid, and refined concrete against high?

The underground wave may contain biters of different levels.
At the moment, reinforced concrete weakens the underground attack, slowing down the digging process. I will consider the option that the biters emerge from underground "wounded" if they have dug through a solid surface, but it should not provide complete protection.

Many people asked for "flying biters". Imagine that this is them. Weaker attacks, but aimed at vulnerable spots. Only unlike true fliers, they cannot attack through large bodies of water.

I have observed that they traverse through oceans like meh

Can you make high walls? will they include 20-30 walls, 40-50 reinforced concrete,
20-30 low-density structures? At the same time, health is reduced to 10 units and breaks down, forcing bugs to crawl out of the ground?

is there any way to turn this off this feature is driving me and my friends up the fucking wall

Yes. Look in the map settings: "AI: Underground attacks"

thank you so much

I thought that walls forced them to surface?

No. Just turrets or radars

Radar will make them pop-up? It does not seem to be systematical ... it's odd based or with a delay?

It's actually quite simple. If there's a turret or radar within a certain radius of the current attack location, it becomes the target of the attack, and underground attack dug to the surface.

Dimm underground attacks just crossed like 3 km of sea to get to me, so they cant definetely "attack through large bodies of water."

Only if you used artillery, the underground attack can go directly to the target underwater.
If it's different for you, then I need your save. Thanks to autosaves, it shouldn't be difficult to find the moment before such an attack and send this save

I was using JKings B-29 to bomb the creepie crawlies, It seems it it counts as artillery. I am better prepared now of this.