Do you have a link to those videos using contact cleaner? My sister has had issues with the joycons and I already bought a replacement analog stick, but that solution you mention might be easier for her to perform.

EDIT: This is something I might need to do soon, my joycons are already out of warranty, but I noticed one of my right ones the plastic latch is broken again... maybe one of my nephews did it :/

https://www.youtube.com/watch?v=GhtTQ2LHEl0

Will have put these metal ones someday

And, more to the point, the technologies and IP so they can be stolen by the Chinese Communist Party.

Pretty sure the CCP doesn't care much about consoles so they let them in the market without too many conditions and there's not much threat of IP theft either since console manufacturers closely guards the source code ... 

The CCP have way more important IPs to steal such as aerospace/DRAM/chip equipment fabrication/weapon systems/medicine/etc ... 

Well, just consider how much the consoles are shaping the economy in Japan. Imagine China would release a console to the worldwide market that could rival with the competition both in hardware and software. Would be quite some economy booster for China if you ask me, exactly what they need right now.

I don't believe China intends to globally dominate the digital entertainment sector because there is little long-term value in them ... 

Just the core essentials like agriculture, computing, energy, transportation, and soon automation for the purpose of self-sufficiency. China only wants to embrace western technology, not western culture ... 

But also wants all of our data. And what easier way to get it than with a console? They're trying with apps for a while now, but those get drowned in the shops, so only a handful of users have those.