Way too much terms like "proof", "fact", "confirmation", "definitely" later on. Isn't something like this always with a lot of assumption and always with a bias

Way too much terms like "proof", "fact", "confirmation", "definitely" later on. Isn't something like this always with a lot of assumption and always with a bias from the samples? Everyone could happen to be writing like someone else. There is nothing that definitively makes writing different between people like a fingerprint (which, as I understand it, is biologically highly random). Analysing sites like HN to see indicators(!) for sockpuppets or generally correlation of likelihood between accounts' writing styles would rock!