Too be honest, I have yet to run into somebody on a splitboard that doesn't have some basic knowledge and isn't carrying any gear. Not saying I wouldn't help. Already been there done that in several situations. If you look at the accidents from last season, most of them were caused by people who had education, gear etc. You can't just blame the uninformed. As easy as it is.
Again, my attitude is to lead the horse to water. If they don't drink, that is not my fault. You can't force people to make the smart choice.
Of course dropping in on top of me on an avalanche slope could very well get that person killed, and there is a good chance it wouldn't be by an avalanche...