In the end it will depend on how you do it, if you create an automation that does it super well and you can create thousands of content... maybe you can do it with many accounts, but I think it will be better to focus on a few.
Tips:
-Once you find a winning offer, you can use it on other accounts in the same or similar niche. So you can have several/many accounts, grouped into niches and do tests with 2-4 accounts and what works, you scale it to the other accounts.
-Even if you focus on a few accs, always have accs in the chamber warming up.
-If you can make a lot of accounts, sell some and with that you finance the operation, the rest you earn will be clean.
-Scale on other networks, the same content multiplies the reach.