[lmm]

"Matt Hofstadt wanted to make your day so Matt sent you..." is uglier and less pleasant to read than the version with "they've". I don't see any argument in the article for what's actually wrong with using "they" - sure, it violates one of English's alleged rules, but the author acknowledges that those rules don't actually matter.

(Personally I think women should insist on being called "he" - "she" is a grammatical diminutive which implies inferiority - but given that they haven't, singular they is the best approach available).

[gruseom]

"she" is a grammatical diminutive which implies inferiority

No it isn't. No it doesn't! Where'd you get that from?

[egypturnash]

(I'm a woman and I really would rather not textually eradicate my gender, thank you very much.)

[lmm]

"poetess" has been more or less eliminated from the language, and "actress" and "policewoman" are on their way out - at the behest of feminist groups. So it seems your compatriots disagree with you?