Why would you say that?
Anyway, in the press release (in dutch) it says they arrested them through the sale via an undercover agent. So they decided to meet IRL somehow.
Sounds like old school police work like me.

Also beta sucks.

My router also gives warnings like this all the time. It doesnt mean that someone is trying to attack you.

Physically disconnect all computer and my suspicion is that the messages will disappear. If that's the case just keep reconnecting computers and starting services until they come back again.

Or maybe your or their provider has some issues with their upstream provider, or they have some weird routing issues, ... It could be anything, but not an indication of NSA data gathering. That still might happen, but even if they do need to change your route it's not like your going to see 'nsa-logging.gchq.gov.uk' in your traceroute.

Context: This only happens if you type in a word in the textbox "SEARCH YOUR COMPUTER AND ONLINE SOURCES". So yes, then it is going to search online sources. If you don't want this at all then you can disable it, or just remove amazon etc.
I think that this possibility to configure your own online and local sources is an huge improvement compared to what people otherwise would do (search google if you want a recipe, something on wikipedia, name of an artist or do an calculation).

Yes, but unlike almost all other certificates and big websites Google uses elliptic curve diffie hellman, which means something like every user having their own key. That key also changes every day. So after breaking one they would only be able to intercept traffic form that user for 1 day.

So google's certificates give much more security than other ones, even if they use 4096 bit keys.

Good thing that Mozilla apps can be viewed on any smartphone: https://developer.mozilla.org/en-US/docs/Web/Apps