Sadly, that news portends that the hand-written thank you note could be going the way of the original Polaroid camera or vinyl records beloved, yet marginalized or obsolete.
Then after the interview, put effort into a thank-you note that reflects on what the person said and offers an idea about how to solve a problem that came up in the meeting.
This advice is as old as the interview process itself, but many candidates still fail to follow it, especially in the casual world of tech start-ups: Send a thank-you note.