The best things about the TLOU are the bits just lifted from the game, so no real great leap in drama creation, rather a faithful adaptation.

However, the two episodes that are not part of the canon are both back stories for inconsequential characters. They do nothing for the plot. So why are they there?

For what it's worth both of these episodes are ok, to a point, but ultimately, pointless.

The last episode just ran for the finish line, obviously in a hurry to wind up the series and move on the the story for the much maligned second game plot.

I do hope they learn from their lessons. I'm not holding my breath though.