Yes you can 🙂 but the risk is present that a rhizome starts to rot. Its a rhizome that is an aerial part of the plant, best practice and most healthy for the plant is not to cover this rhizome.The rotting can be caused if the substrate is to dense and debri accumulating around it suffocating it even more. Damage from what ever reason will make it more susceptible to bacterial infection. So a good choice of substrate and regular maintenance preventing this to happen is a pre. Since we opperate in a closed system accumulation is inevitable and encreasing the risk that it goes the wrong way if not properly maintained.
They preferably they grow epiphytic in nature you occasinaly see Buce or Java fern growing burried in muddy or sandy soil at riverbanks or in the peat of the forrest floor. But circumstances and conditions here are rather different compaired to and completely on the contrary with an artificial closed submersed accumulating invironment.
I've seen Anubias in a tank standing burried in the substrate for many years. And it still was a healthy plant.. The only con is, if for whatever reason the rot in the rhizome kicks in the plant is doomed to die a gangrenous death.
Bury them as shallow as possible so that a new young leaf pops out as soon as possible or else it will suffocate and melt before it does and the damage is done. Melt is rot.. And still if the rhizome starts growing in lenght it might just grow itself out of the substrate again.