I didn’t realize Meng had tried to do this in 21 but it didn’t even get a vote as far as I can see which is why it was reintroduced again in 23 and it hasn’t moved. So they being a small group of Dems who can’t even get it to a vote doesn’t mean that much so I stand by not anyone with any power will do anything. It’s not like Dem’s have some Project 2025 with this in that goal book for the future.
You said there was a vote though? It couldn’t get enough Dem’s to even bring it to a vote. And no I don’t think a majority of Dem’s would choose to allow non adults to vote and it would certainly be dead if it made it to the floor. There are significantly more examples of Repub’s trying to restrict voting since the 60’s than Dem’s trying to expand voting beyond groups of adults who were deprived from voting like women, African Americans, etc.