It is important to note that in this one https://wtfjs.com/wtfs/2010-02-12-maths-fun even the case where:
0.1 + 02 === 0.3 // false
is the same for Python:
0.1 + 0.2 == 0.3 // False
So this is not a quirk of just JS but it also stems to other languages like Python and it is not a problem of the language but more so an issue that stems from the way that computers store numbers (binary). I believe that this example should be removed because it is not specific to JS.