This card is kinda bad. Compare to Exchange of Information. EoI allows you to make the Runner lose 2 points so that you gain 2, and if you gave the Runner 15 Minutes, then you can also make the Runner lose another point on top of that. Backroom Machinations costs 2 more credits than EoI's 0 credits, and also removes the tags. Simplifying things, Backroom is at most 25% the value of EoI.

So yeah, this card sucks. However, you don't have EoI anymore, so maybe you're so desperate for single tag punishment that you play this. Alternatively, you can also opt to not play any single tag punishment at all, which, in my opinion, is the route you want to be taking. In general, the three NISEI-original tag punishment cards are extremely lackluster, so you should think twice about putting any of them in your deck.

Here is the 7th point for NBN. If you are cheeky, it could be the 6th and 7th point of your game. In the past meta, the easiest way to score this was to combo it with Public Trail, to put that single tag on the runner. But now, NBN has Drago Ivanov. Outside NBN: Reality Plus, it is one point for 4. In NBN: Reality Plus, it is a 1/2 scored from hand.

But 15 Minutes is still legal, why not just play that instead. If your cards slots are tight, you are correct. But here, you can make sure you get it early enough by putting more than one of this in your deck.

Outside of NBN: Controlling the Message and NBN: Reality Plus, it is probably not very good. With those ID, Backroom Machinations becomes desirable, if you go for the lowest amount of agendas possible.

Of note, I think it is the second "tag punishment" that remove the tag after its effect, after Observe and Destroy. I personnaly think it is a good balance mechanic around tag punishment cards.

This operation is quite fitting for the NBN faction. The nice art and good quote are perfectly aligned with the name and effect of the card. I wonder who those people are, anyone knows?

Dubious. If tags are a scarce resource, giving them away hurts. If tags are not a scarce resource, there are much higher-impact punishment cards than this. Boom! is usually game-winning on two tags and Shipment from Vladisibirisk lets you score any agenda out of hand.

Adding an agenda point for $2 and a click and a tag is weak value and it actively sabotages cards which are good enough to warrant the huge amount of work and influence/cardslots that go into landing tags.