I read their last theory about Obama being Rose the whole time and wow:

Imagine giving up you physical body forever, witnessing all of the different timelines and live's you could've lived if you had gotten over your crippling internalized homophobia and asked out either one of or both your best friends, only to find out it was all a ruse and you were never "over" your problems like you thought you were.

It was all a sick placebo effect and deep down you were just the same person but in a new, colder unfeeling metal body and the person who did this to you was your sister who only wanted to do this as some sort of sick power play against her dad who's also your brother (homestuck Strilonde family tree is weird but moving on) and you come to the sobering realization that maybe your sister has become someone you don't even recognize anymore because how could she ever do something like this to you? All because of some game you're not even allowed to play because you're not like "them" and were never really a fixture in this twisted family they've decided to build with each other?

Ugh. Ouch. Nooooooo.

This is like even worse than "Obama was Dirk the whole time" because at least I'd expect it but oh my gosh they've been through so much together, Dave trusts her and has been her friend for most of his life, they've bonded over how shitty and weird their home lives are...And she does this to HIM of all people??