Houston-based startup Quaise Energy is testing technology that melts and even vaporizes rock to unlock "superhot" rock geothermal energy.

I can't help but read "aggressive mining disguised as geothermal tech".

Fine, I'll take my attention elsewhere if you insist...

TL;DR:

Geothermal energy is currently only feasible in very few places where heat comes close to the surface. We are limited by how far we can dig.

The article doesn't really go into detail on why that is, but basically it's due to pressure and heat, drill bits last less time the deeper we go, eventually there's just way too much pressure. It effectively becomes impossible to dig past a certain point due to the cost and materials science of drill bits.

But lasers don't have this problem, enabling us to dig much much deeper, potentially making geothermal practical in many more locations.

Lab data confirm potential of geothermal’s holy grail: superdeep, superhot rock as important renewable energy source

(...) This study challenges the belief that the brittle-ductile transition (BDT) marks a cutoff for fluid circulation in the crust, demonstrating that permeability can develop in deforming semi-ductile rocks.