Yes, well, it would be assumed that most guys and women like sex or were open to it unless they said otherwise, so anyone mentioning they like it very early on seems a bit too much for most to accept, especially as putting the cart before the horse like that would turn many opposite others off assuming you could want it right after meeting.
As for the weed, well, I like prescription drugs for my heart issues, but do you think I would advertise that at onset to prospective others, as they are not selling points. I love your honesty, but total honesty for me comes later, as too many persons may assume things or be too judgmental otherwise. Just like your realization that in-person those traits or lack of are not selling points, mentioning you have an interest in sex and weed may be sharing personal or sensitive topic things too fast, unless short term fun is the desire.
My wife I met through an online yahoo writing group long ago and we talked daily through instant messengers and had regular back and forth emails too. We were both looking for a LTR and got to know each other well over a year before we decided to meet. She did not bring up her home life and condition issues online until several months of communications. I did bring up my disability early on, knowing most women would want to know that, and to not waste her time, but I mentioned that only after a few weeks of talks first.
We have been married twenty years, and we are more opposites than alike. She likely has Autism besides her ADHD, whereas I likey just had AvPD and Social Anxiety. So I guess what I am trying to say is, I believe certain things shared too soon are a huge turn off to most, so I recommend others talk of and show their abilities that more would want to hear about or see about early on. I suppose many women can maybe prefer casual sex relationships too, but then be specific that shorter term fun and enjoyment is the desires or main needs then.
For those into LTR, talking sex and weed interests at the onset could rule out the majority who may sees that as warning signs, unless, again, the desires were mostly casual short term fun. Then talking such early seems far more appropriate.
Just my opinions, but I try to look at things from all perspectives.
that is exactly who I am and what I am looking for. 
