That inference isn't made. Eliezer has other information from which to reach that conclusion. In particular, he has several years worth of ranting and sniping from Shminux about his particular pet peeve.

That very well could be, in which case my recommendation about that inference does not apply to Eliezer.

I will note that this comment suggests that Eliezer's model of shminux may be underdeveloped, and that caution in ascribing motives or beliefs to others is often wise.