Considering Xbox is a subsidiary of Microsoft, being on PC (using Steam as a distributor) is still technically within their ecosystem, as Microsoft is primarily a PC software company.
So, yes, it pretty much means "not on PS5".
Considering Xbox is a subsidiary of Microsoft, being on PC (using Steam as a distributor) is still technically within their ecosystem, as Microsoft is primarily a PC software company.
So, yes, it pretty much means "not on PS5".