But the thing I don't get is physicists supporting goofy interpretations of quantum physics. Wouldn't you think THEY would know better?!
One would think so
I believed this for a long time myself so I know how convinced your friend probably is. Like your friend I really thought there WAS lots of scientific support for it all because there are scientists supporting it! (Fred Alan Wolfe, A. Goswami, Fritjof Capra, that water crystal guy, M. Emoto to name a few, and MDs and PHds like Chopra and Lynne McTaggert). Not until I came here did I realize that even within the science field, you have to be careful and that all scientific research is not created equally, and an expert in one area of science is not necessarily an expert in another. It can be a minefield out there for those who are only just barely knowledgeable about science.
Yes, I see what you mean, and I don't want to sound harsh.
We live in a time when there is an onslaught of information from all directions showering over us constantly, and it demands much of us these days to wade through all of that and filter out the valid stuff from the sheer nonsene. It's impossible for that matter for any one single individual to check out and test everything for ourselves, and we have to trust the ones with more specialized knowledge to tell us the right info. And as you say, when we can't even trust them not to be gullible, what do we do?
I guess there isn't a full proof system to guarantee we always will get the best info, and none of us are really 100% immune against getting fooled now and then. But there is still quite a lot that we ordinary every day people can do to sort all this information a bit better and minimize the risk of getting fooled by this and that. Teaching our kids critical thinking is a good start I guess.
Many people do know to be sceptical in some situations but aren't a least bit skeptical in others. They won't believe everything a used car salesman say, but they believe the local tarot card reader... So they have the potential, but it is other factors that stops them from applying it to other parts of their lives. Factors such as traditions, social factors, lack of education in different subjects, the prejudice that it is not a positive or nice thing to be skeptical (my friend referred to it as "Mr. Spock-people" - logical people with little sense of humor and feelings). And many other factors too.
That you once believed these things does not really matter (we can all fall for things) what really matters is that you were open to learning and discarding what turned out to be wrong.
What really annoys me about people such as my friend isn't really that he believes these things, or that he didn't recognize faulty information, but that he doesn't seem to want to learn and discard. Well, I won't say too much yet, I'm prepared to give him the benefit of the doubt and not judge him right away, he might still reply and be... well, openminded!! But he did give some rather telling examples of typical woo behaviour such as saying
I am not open-minded when I didn't accept some of his wooish talk, and when I wrote the reply to the things he said in the OP, telling him about the common misunderstandings about QM... well, I have still not got a reply, and something is telling me I will not get a 'thank you' even if I do get a reply.
Believing weird things is understandable - rejecting knowledge when offered it... I don't get that

But maybe he isn't rejecting it, maybe he just needs time to process things. I don't know.
I am no expert of anything, but only during my one year stay at this forum I have learnt SO much about how to get better at separating valid stuff from nonsense, and I would gladly have taught him the little I know so that he could set himself on his own self-learning journey.
But so far it looks like he doesn't want to, and my tries to at least make him aware of the risks you mention and so on, have been met with basically telling me I have such a pessimistic and skeptical outlook on life that I can't be taken seriously.
You are right, this world is full of traps, it's not easy, but if people also
wants to fall in them... *sad shrug*
Be that as it may, maybe my whole approach could have been better, I know I am not very good at these things, I mean talking with people about things like this. But, well...