Is there actually something behind all these comments about his appearance, or is it just typical internet name-calling that mostly falls into the same anti-LGBTQ+ bucket?

“Till” is completely valid synonym of until. “'Til” is an informal contraction (and was probably meant to be the actual word “till”). If you’re gonna be aggressively prescriptive, at least pick an actual battlefield instead of attacking innocent folks.

Are you perhaps saying that trying to teach an understanding of a concept like place value or carrying is more complicated than just getting the answer to an arithmetic problem? I have no idea why that should be the case, where would you get such an idea anyway?