This is my life

I guess for me it is very much on the reader to decide what they're okay with reading or not. I think there is only so much a writer can do - I understand triggers are often very idiosyncratic and different for everyone, and I just do not think it is possible to warn everyone via tags. (For example, there's regularly discussion about what is enough to warrant a tag - sometimes people looking for X kink or Y trope are disappointed because it doesn't feature prominently, or there's untagged this or that).

On the flipside I think it's fair that if you took the risk and got triggered, of course you can be upset or angry or whatever you feel. It would be unreasonable to say "well, you can't have feelings" even if it was clearly warned for. But to me, if it's been tagged "Read at your own risk" then going after the author rudely, guilt-tripping, etc is uncalled for. The decision rests eventually with the reader whether or not to go past the warnings. A polite note saying "can you could warn for common trigger X" would be okay to me personally; it's something concrete for the writer to do something with and possibly help others (whereas unloading their feelings on the author will...what? Make them feel better? Try to make the author stop writing whatever?)

Personally since there are people who surf tags (seeing them as enticements) I prefer to tag the prominent things and then use the endnotes to content warn, saying "Content warnings in endnotes" in the front-notes to avoid spoilers. Kinda complicated but I think it avoids the problems of over-promising on the tags, still letting people know what's in it, and not spoiling the plot.