Very low dielectric constant, so low capacitance for a given size[1].

It also seema these devices are more 2D than 3D so surface area matters more than volume[2].

[1]: https://blog.knowlescapacitors.com/blog/capacitor-fundamenta...

[2]: https://pubs.acs.org/doi/10.1021/acsomega.2c07549

They are not even the same kind of component.

If you try to make an integrator out of this thing, you'll have a very bad time.