It's honestly incredibly freeing to disregard legacy entirely. Concentrate on how you treat people while you're alive and don't worry about what or if people think about you after you're gone. Legacy doesn't matter... but today does.
I do think it's incredibly unlikely anyone will read old stuff on the internet while there is a trillion hours of new content being produced every day.
And tomorrow, and the next day. Because what we do each day does affect tomorrow's today. If that makes sense. I think we should consider what we "leave behind" in terms of how our actions are going to affect others - even if we don't know them.
I agree. Except, my daughter might be interested. It again comes down to who actually cares. Strangers don't.