It sure would. I was living off of a way smaller stipend for 2 or 3 years (the Austrian "Selbsterhalterstipendium"), and it was the most unproductive time of my life because I got enough to get by with minimal effort, since the conditions for the stipend were ridiculously low. I learned that if I can get money with basically no strings attached, I become lazy. Nowadays I'm not, simply because I have to work for stuff. I enjoy my work, but I wouldnt do it if it wasnt necessary.
It was a great time, but it tought me that people get lazy if they don't have to work. So now I am obviously projecting my own lazyness to the general population, which is why I am against UBI.