[Fair warning, I'm writing from an emotionally-attached mindset for once, usually I don't care so much. So this might be a bit brash.]
I loved what Chupi had to say, and generally information from people at tulpa.info seemed alright. But there was some pretty disgusting fear-mongering (I will call it that), with all the "don't mess with these entities" and that so called Tibetan lama losing control of her tulpa and it turning evil.
Don't tell people tulpas are uncontrollable and potentially dangerous. That makes things worse - now they believe it, and you've made it true through that belief. They are exactly what you believe they are, capable what you believe they're capable of, no exceptions. If you believe you DON'T know what they're capable of, then guess what happens? Exactly what you think might.
I'm honestly starting to think my tulpas are a rarity, being completely logical and aware of what they are. People are only calling tulpamancy "scientific", and then going right back to believing whatever they feel like. It shouldn't take a certified psychologist to explain why all of these negative experiences people have were the fault of their own thinking. (In fact I've never taken any class related to that subject - I'm just a healthy skeptic by nature, and I strive to understand ~everything important to me.)
The only good thing about that "don't make a tulpa" stuff is that it might keep the less open-minded people from doing so. Certainly if I'd read this article, I would've started researching and making one immediately, because I naturally don't accept others' limiting negative beliefs. Chupi would've been my inspiration in fact, as someone who didn't believe tulpas were inherently uncontrollable.
I don't know what/why I'm writing anymore. It just bugged me that they were promoting negative beliefs and I had to vent, sorry.