Yes. Some countries have specific regulations regarding the use of mobile devices. For example, if your phone is used in Turkey for more than 91 days within a 120-day period, its IMEI number must be registered with Turkey's Central Equipment Identification Register (CEIR). This registration requires a one-time tax payment.
This specific rule is an example of the "some restrictions may apply" clause mentioned in the "Additional Information" section of your documents when purchasing an eSIM.