e.g. US can collect foreigners and UK can collect foreigners?
Do you think spy agencies should be able to swap data about those foreigners?
Because the two in combination allows the UK to spy on US citizens and give it to the US, without the US needing to spy on its citize s
w.r.t. your second question, this is where things start to get grippy. see my response to another question referencing "realpolitik". in this context, then whether or not they should becomes a secondary consideration at the policy level.
The difference is that I come from a country where secret service (both domestic and from other USSR-friendly countries) used to be almost almighty ~25 years ago. And I've seen the damage it inflicted on the society (including some family members) by eliminating any form of dissent or sign of disagreement with the government. Considering how much cheaper and easier dragnet-like surveillance got over the past few years ... well.
You may point out this particular case (compromising SWIFT bureau) is different, i.e. it's the type of action you'd expect from NSA-type intelligence agencies. But it's a mistake to see the agencies as independent / isolated entities. The rest of the leak is however interesting as it shows how hoarding of NOBUS 0days fails, because it's never really NOBUS.
1) yes of course I know about HN demographics
2) you should care about that distinciton because this is true for any nation/state.
until such time as we evolve dramtically as a species these types of organizations have a place. it's distasteful perhaps, but a necessary thing.
getting emotional about it impedes a rational consideration.