Learned this lesson the hard way, once bought a cheap replacement laptop charger for one that had broken.
It didn't work and instead borked the backlight of my screen.
I then discovered that on this model, the backlight couldn't be separately replaced, had to buy and fit a whole new screen and then also buy another replacement charger.
Never heard that idiom before, (is it German?)
Sentiment is clear though, I would probably just say "in its infancy" or something.
Also completely agree with your points. I'm a major supporter of FOSS but at the end of the day, I'm gonna use what actually works - the same as everyone else.
Which UK party are you referring to as being pro-Moscow?