I would hate it if the system removed nodes from my network without my influence. Perhaps a rules engine with user defined criteria would be useful.
Ultimately, users define their network in current-day social media and the relevance of any celebrity or other person within it.
400M people still find Selena Gomez relevant to themselves - she’s simply not relevant to you. I asked Gemini very simply “is Selena Gomez relevant” and it responded with essentially “more in 2026 than ever.”