Strong agree. The best managers I've worked for have been capable of coding and were often former devs, but didn't insert themselves into the team's flow like that.

It's very easy to turn "but I code" into a weird ego trip for a manager to try to look good while just making their team slow down to deal with the fact they're bad at code review or coding at all.

It's not like there's a lack of work to do for most managers that's not coding.