Oomis,
I believe that you misunderstood real-brisker’s point, which he later clarified, and eventually reconsidered.
Regarding your statement about chumros, “You are making assumptions that do not exist, and that is how a lot of chumros come to be observed, that have no real basis in halacha.”, which chumros are you referring to? Most chumros that I know of have sound basis in halacha, and not keeping (some of) them might be considered a “kula”. The examples which come to mind are chodosh/yoshon, cholov “stam”, and the local eruv.