>>95712597Call me jaded, but I'm in this hobby since late 90s (since 18th March '97, to be precise). Since late 00s, I'm also running a random open table every other week. And people DO play at the lowest effort possible in general. Whatever different results you might be having are outliners, not the norm. The norm is zero effort put into it and zero fucks given, because the goal is to have fun playing a game, with zero fucks given attitude, too. It's such prevailing occurrence, I just no longer even consider other options.
As for settings - people almost never give fuck. And when they do, then they are asking questions. Often pretty specific ones. Often ones that only matter during char-gen. Giving them a primer is a lot of wasted effort and time, because it's not going to answer their questions in majority of cases, while you should be doing char-gen together with the whole group and GM present anyway, making the primer really just pointless.
My conclusion is: good for you to have such players, but they are not the norm, nor they are something common. You just luckied the shit out that your approach matches your players. I would never waste time on writing a primer for hour or two, if I could just handle it during opening pep talk in 5 minutes and then get questions that actually matter for next 5-10 minutes, rather than people assuming things that come from the primer they were given.
tl;dr in my experience, primers are completely wasted effort in a truly misguided way of handling basic information on a completely wrong level.