There are notable exceptions however. I have stayed in Four Points Surabaya, and it has better rooms than many Sheratons, LMs, CPs or alike. Obviously, it is nothing of upscale (no lounge for example), but I won't agree with your definition. Or at least some hotels are mispositioned in branding.
OMAAT just posted a review of Four Points in Nairobi btw. Rooms look great: https://onemileatatime.com/my-favori...sheraton-ever/