You're assuming age is the issue here, when the real issue is these lawmakers are mostly bought by corporations and are lax on issues that don't benefit their portfolio or get them re-elected. This goes for the young and old politicians alike. I know many older people who keep up with technology or are at least curious to learn.

Edit: Also because this deepfake porn issue affects so few people, it's never going to be moved from the backburner. Creating laws around it won't even create a ripple in the election cycle. This is the real issue: the only job of a politician is to get re-elected. The creation of a new law (even computer related) is not determined by the age of the politician, but the likelihood of it getting said politician elected again, or like I mentioned, getting some sort of financial compensation.