if someone is considering keeping venomous they should already have years of experience keeping no venomous snakes already. when someone starts keeping non venomous and they say they want a good beginner snake they get answers like corn snakes, ball pythons, spotted pythons and others. those are considered beginner snakes because they are easy to care for and most are good eaters except the ball pythons lol. i don't see a problem with saying beginner hot, if they have never had a hot before they are a beginner.
there are hots that would be better to start with then others copperheads, pygmy rattlers some others and there are hots you would not want to start with like cobras mambas taipans. of course keeping a non venomous snake and a venomous one are very different but you still have to consider a few things when you get the snake. how easy they are to keep, how they are to handle and the venom. cobras are pretty easy to keep but handling them can be difficult.
starting with a mentor is the best way but that is not always possible for everyone. i didn't have one. but my friend who i got hots from would tell me what not to get at the time. when i was over his house and he would be cleaning cages i would see him move cobras and stuff now and then so i just watched how to do it. i just think saying beginner hot is that big of a deal. its just another way of asking what snake would be the best to start with, and if a mentor is not available there are many snakes you would want to stay away from.