>

That’s unfortunate for them, but seeing as how you “they’d” them in your very same message explaining why it’s problematic, maybe you can understand that the English language doesn’t work the way you seem to want it to. 
Pronouns function to make sentences less clunky. “They” is the best neutral third-person pronoun available in the English language. 
I can absolutely sympathize with someone who doesn’t want to be misgendered, but if you’re going to start considering neutral language as gendered language then the problem lies with you for misinterpreting someone else’s words.
My daughter died by suicide recently.  I know they'll never read this, but my heart goes out to the family. >

My Grandfather committed suicide this last Monday. The pain it leaves the family in I can’t even describe. >

I commented on the post above you but I wanted to make sure you saw it too. r/SuicideBereavement has been a very supportive space since I lost my dad 5 years ago. Take care of yourself. Those first few weeks can feel like you’re living on the wrong planet, but it will get easier. >

The "she" is in reference to his mother. >

They committed suicide. If you are feeling like you might self harm 988 has been designated as the new three-digit dialing code that will route callers to the National Suicide Prevention Lifeline. >

The comment above says they used He/him pronouns. >

Sorry? The person’s sentence you’re replying to is grammatically correct, so what’s the issue? I don’t think an article about a tragic suicide is really the time for pedantry. >

Many binary trans people (trans women and trans men) don’t like being “they’d” when the go by he/him or she/her pronouns. They consider it a form of misgendering.