It depends on how you define "worship."

If someone says they are a Christian, for example, but goes on to rape or murder someone can we say they actually "worship" God when God demands his followers not rape and murder?

In other words "you will know them by their fruit."

Say you believe in Ba'al. Sure, I don't care. I'd be fine hanging out with a Flat Earther or a Hippy Tree-Hugger Wiccan. I disagree with their beliefs, but if they act no different then what do I care. I can't change someone's beliefs, but I can prevent them from acting if their actions harm others in the name of "worshipping" their false gods.

As soon as I find out they are doing what Ba'al asks of them, I'm donzo's with that relationship. No matter how they try to sugar-coat it, as soon as I get that red flag of "oh, Ba'al worship isn't that bad, we just do a little blood-letting here and there" I'm cutting off ties. I don't wanna be on the receiving end of one of their conversion rituals.

Do I know they will up the ante and turn to human sacrifice, in keeping with the numerous examples of Ba'al worship including ritual human sacrifice? No. But I'm not gonna stick around and find out.