Subjectively, it’s one thing to go “damn, this artist vanished before this character was introduced, would love to see them in their style”, and another to just use one existing style and never move on…
Rules-wise it continuously runs the risk of “artist X draws Y content, and they just released a Y content folio that has images just like these ones someone’s generating”. Even if unintentional, it veers into a shitty area. And mods get pulled into shitty areas, and nobody, not us and not you, want that; we’d like to be as hands off as possible without inviting pitchfork mobs and lawyers to rally at our gates.
As for tagging them… don’t. I’ve already witnessed way too many discussions where someone says “This looks exactly like X’s work” and loads of people agreeing only for it to not only not look remotely similar, but not even used anywhere in the workflow, and just built up from some guy’s overspecific focus on belly buttons or something utterly coincidental. Would be a whole lot of bad calls and effectively tag vandalism/vigilantism going around.
Also, fixing up a unique “your style” is actually fun, and makes your work look unique and identifiable as yours.