Because people have lost common sense these days.
The answer for 2 is in the second paragraph and the answer for 3 is in the third paragraph and the word is encouraged. Hope this helped!!
Read it! A warrior gets schooled by a woman on the art of being brave!
A pronoun antecedent agreement has to do with keeping the consistency and inclusion of genders or lack thereof when writing. For example if you were to say "A student must call their parent/guardian before riding a different bus or she will not be allowed to ride said bus." you would be violating the pronoun antecedent agreement by saying she rather than they.