i’m going to assume you’re talking about light brown or golden demerera. it’s totally fine to use in place of everyday granulated imo (unless it’s a technique that requires a fine sugar) if it’s light enough, you barely notice a difference in tea/coffee. i actually prefer it. and people have been doing it for decades?
it’s partially refined and not as strong/overpowering as proper brown sugar - you wouldn’t use any sort of muscovado or the jaggery, sucanat etc that’s just sugar mixed with molasses or syrup (this is a thing). now that would call for a thread.