Hard disagree. Some people are hyper-sensitive due to extreme trauma, which can trigger into
all kinds of things that can't be fathomed by the unaffected.
It's also something particular to this site. The crossover of visually-sensitive with those who choose to hang out on one of the few text-only sites on the internet is probably high.
The link is bare and with no clue as to the content other than it goes to "wikipedia", somewhat of click that could be considered to be safe. To me this justifies a warning.
I'm an arachnophobe. If people reliably put "cw spiders" on links to spiders, my life would be a bit better. (Not a lot, because it's already not that hard to avoid pics of spiders online.)
What we're talking about here isn't 'may contain nuts', it's 'definitely contains actual nuts'. This link doesn't have a "chance" of seeing a stuffed goose with an arrow in its neck, that is in fact what is there. Your example doesn't fit.
It's also something particular to this site. The crossover of visually-sensitive with those who choose to hang out on one of the few text-only sites on the internet is probably high.
The link is bare and with no clue as to the content other than it goes to "wikipedia", somewhat of click that could be considered to be safe. To me this justifies a warning.