Is it? Is that why we have episodes were the basis of reality is thought? Where a soul can be transferred from person to person? How phasers work? How the transporter works? Star Trek stretches science a lot for the sake of dramatic convenience a lot more.
I know that many like to hold on to Star Trek as a bastion of scientific projection but it really isn't.
Now, can people not like the Burn's cause? Yes, absolutely and many have voiced their concerns over it in multiple threads. But, there is a lot of unbelievable science in Trek.
Souls - actually energy based life forms
Transporter - perfectly valid form of technology - scientists have proved quantum teleportation works
Phasers - we have lasers already, they are just an extension of that
Warp drive - warping space/time to propel you forward - basis in facts about space time from Einstein's theories
Time travel - theoretically possible
wormholes - again possible
nanites - possible
etc etc
Of course there are going to be some things that needs to be created for the story that don't have basis in reality, either because its just not possible (fantasy) or because we haven't invented it yet.
But what I'm saying is for the most part, a lot of it is scientifically plausible, and or can be explained as plausible within the confines of the rules of the star trek universe.
In this case I suppose they haven't had a chance yet to explain what makes this plausible in their universe.
Another two points of issue are:
- that if dilithium is exhibiting this weakness and can be destabilized to such an extent, why has no one ever in the history of warp faring civilization ever discovered this weakness?? And weaponized it?? I imagine they could just create whatever wave this is and direct it at a ship and make it explode on demand.
- since this scream from Su Kal didn't result in Discovery exploding, and that looked already like a pretty powerful wave he emitted, then what the heck happened the first time in order to make ships explode across the entire quadrant (if not further)