It can be.
Product Strategist is defined differently in every company, like every other title. Very often product strategy work in a part of the product manager or UX lead.
So first, list the things you like to do and look around to see whit what role you have the most overlap.

Or made up a role and define it yourself and try to sell it to your current employer or a new one. Think of it like designing a product — it has to solve a big painful problem.