Orange banners atop a Wikipedia article rarely appear by accident. Someone read the page, found something specific, and named it: {{Advert}}, {{COI}}, {{Notability}}, {{Primary sources}}, {{Third-party}}. Each template links to the guideline behind it and stamps the month it went up, turning the tag into a small, dated record of an objection nobody has answered yet.
The templates read narrower once you look past the wording. {{Advert}} flags specific sentences that sound like copy from a press kit, not the subject as a whole. {{Notability}} flags the sourcing as written on the page, not the subject's importance in the world. {{Primary sources}} flags an article leaning on the subject's own materials rather than independent judgment. Read the linked guideline before deciding which objection actually applies, and check the talk page — a tagging editor sometimes leaves a note there naming the exact sentence.
The instinct, especially from a subject's own team, is to delete the banner and move on. That edit rarely survives. Editors patrol recently-removed maintenance tags specifically, and a tag pulled without a matching change to the prose — no new source, no rewritten sentence — tends to come back within a day, occasionally with a note on the removing account's talk page. The banner was never the fight. It described the fight still to be had, on the page itself.
A cleanup tag should stay on an article only for as long as the article actually has the problem the tag names.
Each tag has a fix that looks nothing like an argument. An {{Advert}} usually comes down to three or four phrases — an adjective with no citation behind it, an achievement worded as praise instead of fact — resolved by rewriting those lines against a source that is not the subject's own website. A {{Notability}} tag asks a harder question: has any independent publication covered the subject at length, unprompted by a press release? If the answer is yes, the fix is finding that source and citing it, not contesting the tag's premise. If the honest answer is no, no rewrite removes the tag correctly, because the article does not yet belong on Wikipedia.
A tag left alone does more damage than the defect it names. In month one it reads as a minor caveat; by month twelve it reads as neglect, and it has spent that entire year flagging the page to whichever patroller decides what to nominate for deletion next. The page rarely benefits from whoever watches it longest; it benefits from whoever fixes it first.
Tags do not remove themselves, and arguing with the banner spends the exact effort that would have satisfied it. Cite the source a {{Notability}} tag is asking for, rewrite the sentence an {{Advert}} tag is naming, and the banner comes down the way it always does — one edit, then a second editor's agreement that the problem is actually gone.