@Ritesh Sharma Thanks for posting in our Q&A.
For this issue, I have done the test in my lab. As you said. we can use a normal Azure AD account to create bulk enrollment token and enroll the device successfully.
Honestly, I'm not sure if there is any issue in future use. Given this situation, it is suggested to create an online support ticket to double confirm. Here is the support link:
Thanks for your understanding.
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