Stateen controlling access to state

[vernonpang]

when a stateen CSR prevents access to state by less-privileged levels, an attempt in one of those privilege modes to execute an instruction that would read or write the protected state raises an illegal instruction exception, or, if executing in VS or VU mode and the circumstances for a virtual instruction exception apply, raises a virtual instruction exception instead of an illegal instruction exception.

Does the above apply only to CSR read/write instructions? Does it also apply to instructions such as cbo.zero from the Zicboz extension where envcfg.CBZE is implicitly read to determine if the instruction should raise an illegal/virtual instruction exception?