The people taking it upon themselves to be the 'fiction police' of the online sphere today are just as bad as the mothers decrying 'satanic' media in the 80's. It was stupid then, and it's stupid now.
There are many good reasons to explore 'problematic' themes in a story. If you don't like that as a reader, that story is just not for you, and you should go read something fluffier - not drag the author through some 'trial by social media' because in your subjective opinion the story is bad.
Ugh, this is one of those issues which really grinds my gears.
Being called a paedophile because one of your adult characters is short, and somehow 'child-coded'? GOOD. GRIEF. That's SO dumb. Is my partner a paedophile because I'm short, and due to ADHD tend to exhibit more child-like behaviours than the average adult? NO. He's not. I'm a grown-ass woman with neurodiverse quirks existing in the real world. If I exist, characters like me are allowed to exist.
Besides that, the standards for what's considered 'unproblematic' are constantly changing. In five years time, maybe all the kids will be dragging on happy, fluffy LGBT+ escapism as 'problematic' because "It's pretending that discrimination against LGBT+ people doesn't exist, therefore it's queerphobic." I can definitely see that argument becoming a weapon wielded against creators just doing their best to tell a good story.
My advice as an author is to just write the kind of stories you'd like to read, and if people decide that's somehow 'problematic' and you're terrible for writing it, a liberal application of the block button is in order. Hopefully, this is just a short-lived resurgence of 'satanic panic' style censorship and shaming which will simmer down in a decade, and be looked back on with derision in the decades to come.