Tanks for the clarification.
> It does stop people installing another OS
You mean "doesn't stop people", right?
As stated elsewhere, a law lives on its interpretation, and every interpretation is instrumental. Probabably the article is alarmist and has a clickbait title, following a persomal instrumental interpretation as well, but the fact that Samsung locked its OS few days ago is a suspicious coincidence.
The queston is: is it possible that other manufacturers, Google included, use this law to arbitrary decide to lock the bootloafer? It's not a crazy scenario to me, given the absurd things they did in the past.
I think that in these cases, always paying attention to don't spread dangerous misinformation (here I don't see harm), is better to take in consideration the worst outcome. If "they" see that we are worried, they will be careful not to exaggerate; if we ignore the matter, they will do whatever suits them.