Was the resignation of Al Franken a mistake?

Al Franken has lain low since his resignation from the Senate after allegations of sexual harassment against him surfaced in the early days of the #MeToo movement. Recently, Franken has come out of the shadows to speak with the New Yorker’s Jane Mayer. He indicates he regrets resigning and many senators involved in pressuring him to resign expressed regret as well—Patrick Leahy went as far as to say it was one of the biggest mistakes he’s made in his 45 years in the Senate. Others, like Kirsten Gillibrand, have defended their decision to call on Franken to resign.

https://www.newyorker.com/magazine/2019/07/29/the-case-of-al-franken

So what do you think? Was it a mistake? Was it an overreaction? What have we learned from the Al Franken story?