I have recently written about how the popular youtuber and math popularizer Matt Parker has, deliberately or inadvertently (it's not clear to me which), started to litter his speech and is videos with an almost constant use of the word "they" when referring to one singular person, sometimes to quite excessive and unnecessary extents , probably as a form of social engineering in an attempt to try to make the usage of that pronoun normal and widely adopted (and again I'm not sure if he's doing this consciously and deliberately, or inadvertently), and how the use of that pronoun to refer to one single person, especially a friend, can be quite dehumanizing and even offensive . It has, in fact, become so bad and so frequent that I just cannot watch his videos anymore, even though I was quite a fan and subscriber for years. Out of curiosity I checked his latest video (as of writing this) which talks about Einstein's Theory of Relativity. I couldn't get past the ...