In general I think subbing in a GK who is that much better on pens is a good idea, but apparently Kepa has played every match up until the final where he was benched and then was subbed on again for the pens? Basically Tuchel saying he didn't trust him to play the final then putting him on. Not the best of circumstances I'd imagine.
Also, it's a kind of play that, no matter if it's the right choice or not, you will be ridiculed with an end result as spectacular as what happened.Β