I mean, they can totally get a programmer into "Sorcerer's Apprentice"-style shenanigans, but I've never heard of a daemon tempting anyone.

Computer daemons don't tempt people. There's little danger is using them. At least as long they aren't AGI's. Tulpa's are something like AGI's that don't run on computer but on your own brain.

D_Malik read a proposal for creating tulpas with specifically tell the reader that they aren't supposed to created for "practical purposes". After reading it he thinks: "Hey, if tulpa can do those things, we can probably create them for a lot of practical purposes."

That looks like a textbook example of temptation to me. I don't want to advocate that you never give in to such temptations but just taking there Tulpa creation manual and changing a bit to make the Tulpa more "practical" doesn't sound like a good strategy to me.

The best framework for doing something like this might be hypnosis. It's practioners are more "reasonable" than magick people.

Also, congratulations for going through these experiences and retaining (what I assume is) a coherent and rational belief-system.

This and related experiences caused me to become more agnostic over a bunch of things.