I’m not quite sure what you’re getting at, but you do realise that if the vote was tomorrow remain/rejoin would win regardless of whether or not it was opened to 16-17 year olds as well.
Giving a vote 7 years later doesn’t disenfranchise anyone. It’s quite the opposite, especially for the 5m+ people that have turned 18 in that time.
44% of the electorate voted for a conservative government only 4 years ago. By your reasoning, the fact that we’re going to have a GE sometime...
I’ll let you in on a little secret: He didn’t vote remain. Neither did anyone else who says they voted remain but would now change their vote to leave to respect democracy or some other nonsense reason such as ‘the way the EU have treated us post Brexit’.