It doesn't mean that we should ignore their voice though. We're all adults, even the people who didn't research, even the people who "voted as a protest", even the people who are regretting it now, and we have to live with bad choices that we make.
I think that argument would have made a lot of sense
if the people having to live with the bad decision were the same people who made the bad decision, but that's not the case. The vote to leave is already causing massive harm to EU residents in the UK and UK residents in the EU, who are now living with considerable uncertainty as to their futures. Many of those people were (unfairly in my view) deprived of any right to vote in the referendum. Many others are likely to have voted remain. Then there are all the many people who voted to remain because they valued the fact that their British citizenship made them in effect citizens of the EU as well, able to live wherever they wished in Europe. It looks like that right is now likely to be stripped from all those people, against their will. To my mind, that has connotations not so much of democracy but of mob rule. And of course there are all the people who will suffer economic hardship, including in many cases unemployment because of the economic impact of the EU - again, many of whom will have voted to remain because they did their research and realized what impact leaving the EU will probably have.
In short, many people who voted to remain will suffer massive harm to their lives. As one example, the spike in the numbers of people looking for ways to get EU passports clearly shows that many peoples' dreams of living and working abroad are likely to be shattered (unless we join the EEA and keep full freedom of movement, which currently seems unlikely). To say that those people should just have to lump it without any protest because of the bad decision that *
other people* made seems to me morally reprehensible.