He even got his "if its not Scottish its crap" moment when he saw Fitz' prosthetic hands.

There was an awful lot of great stuff in this episode but the stand out moment really was Danielle Panabaker's performance as Caitlin being Killer Frost. That recomposing herself while Black Siren had her back turned was just phenomenal and I suspect would be entirely the actors choice and wasn't in the script.

I'll use the correct trope for the correct reference. S1 and S2 aren't going to suddenly stop being one of TV's best examples of continual idiot plotting. They're on record, forever.

Bellamy's heelturn and Pike becoming chancellor happened FOUR episodes before Lexa died. As usual, the contractually necessary (and very well handled) death of Lexa gets criticism it didn't deserve.

You have to remember Kyle was giving pretty much every episode in Season One and Two As and B+s (when it was absolutely filled with huge plot issues, poor characterisation and idiot plotting).

You're overstating the volume effect.

Modern nukes have relatively small yields, they are variable but the standard US/UK W-76 warhead only has a max yield of 100kt which is not particularly larger than Hiroshima (15kt). If you go to Nukemap you can see just how limited the actual damage ranges for this type of bomb actually are.

I think the review is being overharsh with the nuke event. Sure it would be the biggest thing to ever happen in our world. But this isn't our world, this is a world with Metahumans and The Flash and costumed crime fighters in major cities. That in itself is a pretty big, game-changing deal.

The parallel between this episode of The Flash and the last episode of Arrow is very strong and highlights the inherent flaws in setting up Seasons Arcs with no idea how they will resolve. Making It Up As They Go Along is the death of serial storytelling and it seems no-one on Berlanti's team is learning from this.

He still manages to give this clusterfrag a B+

While Cisco was the most consistent character in the episode and a lot of his stuff was not incoherent nonsense, it still seemed a bit ridiculous that he never figured out the Earth Two goggles would help him open portals.

This episode of Flash has to be trying to win the award for the number of huge, unforgivable plot holes in a single episode.

Ockham's Razor applies and your explanation of the most obvious explanation is almost certainly the right answer.

The entire thing was an incoherent mess, not only did it make no sense in the episode most of it ended up contradcting the series arc they had already established.

Cisco opened a breach which vanishes as soon as he stopped maintaining it. There was no longer any breach between earths.

How.

Absolutely nothing about this episode made any sense.

It really is frustrating just how badly written the show is. You're right, it's not just the odd ridiculous plot hole, it's literally 3 or 4 per episode and it's killing really good characters (Sara Lance and Leonard Snart are potentially iconic characters, the creation of which the Flarrowverse can be very, very…

I'm just amazed that they could have Caity Lotz in a nurses outfit snogging another hot blonde in a nurses outfit and the episode was still rank rotten.

You can get the best director but if your script is garbage, you'll still get garbage on screen.