I'm not sure what you are getting at here. At this point every Senator, Representative, and President has faced an election with Gen X and Millennials having a majority. Every single one. You seem focused on the Presidential elections but they are only 1/8 of the elections at best assuming twice yearly election cycles. Even less when you factor in special elections. People should be informed and vote even with there isn't a President on the ballot.
If we (I'm right at the intersection of Gen X and Y) didn't want a long term congressman to have another term we could have stopped it and the Boomers, who are often credited/blamed for keeping these people in, couldn't do a thing to stop us from ousting them.
I just used the presidential ones as an example because it's more clear cut. They are however very influential in terms of where the country goes.
But in any case you have Governor, AG, Treasury, Insurance Commissioner, your state rep for your district, school board, in my area also the county's board of commission and so. All of those and more that I can't think of don't always follow the same election cycle and at least in recent enough years this has become more and more important. Technically speaking my county's board of commissioners is a non-party position..except there's been a very recent push to make it so.
Things like your board of education may have been important but was it
that big of a deal until during the pandemic? It certainly made people really pay attention because it wasn't as much about budgeting and school bonds so much as many other things.
In my state state law requires every 10 years (aligning with the census) districts to be redrawn for representation. Well this most recent census there's too much population in my area and so they had to by state law redraw the lines. Now that was a heavy political thing and it ended up going to court over the proposed lines due to gerrymandering claims BUT the person who was going to lose people was up for re-election and this was a huge big deal given the current events.
It's just a lot about the climate at the time, the age at which you are able to vote, who is in the running for whatever you're voting on (and colleen is absolutely right about a lot of what she mentioned), and the election cycles.
We can say to the youth go out and vote and that's what they should be doing but sometimes they are either not old enough to vote in an election that could have an individual who will still have influence over things or the causes are there at that particular time or the position is up for re-election and so on.