Yeah.. tend to agree - it's doable but OP would be reaching for some fairly hectic gear to solve a pretty small problem. Consumer monitors with PIP definitely exist and would be cheaper.
If all you're looking to do is nicer input switching, a KVM switch would be a better solve.
Capture cards would be more useful if you wanted to record the gaming sessions. AFAIK they will always introduce latency as they are usually designed for a situation where that is fine.
I've been running ITX gaming builds for years, they work great and I don't use expansion ports anyways.
My advice would be choose the case you want first. Bigger ITX cases will take standard components easily (with some limits on GPU length), but if you want Very Small and Mighty (e.g. DanCase, Fractal Design Terra), component choice becomes very important. You'll need to consider cpu, gpu, and cooling clearances.
It's like PC building on moderately hard mode, it's a little more difficult but the results are worth it!
Carbon credits have been abused all sorts of ways as essentially a license to continue polluting. The EU's current stance is that the credit programs are so fucked in this manner they no longer really count.
Apples current approach of 'everything we can and credit the rest' is still ahead of the majority of the industries position, but not surprising that EU don't accept it as 'zero carbon.'
What the EU would like is for everyone to take responsibility for their own carbon generation throughout the entire supply chain rather than buying credits from greener companies, whether this is realistic or practical is yet to be seen.
There is a bit of a scandal in aus at the moment about this. Qatar asked for more international flights (they back Virgin Australia, one of 2 major domestic carriers in Australia). Government said no, for undisclosed reasons.
The "national" carrier Qantas are scumbags with the government in their pocket and likely quietly lobbied against it, but also Qatar International Airport did this to Australian citizens not that long ago:
They do... 1/3rd of it is used that way.