To be fair even our attempts at describing a technically possible but implausably simple version of a blackhole are essentially educated speculation. Although worth noting that black hole like objects did appear in fiction before they were discovered IRL.
Edit: To clarify our current models tend to involve non-rotating and un-charged black holes and even then there’s significant conjecture as to what happens beyond the event horizon.







That’s still not entierly mass dependant, the point is at a distance based on a ratio between the two masses, if Jupiter were closer to the sun then the point would be inside the sun. Its still impressively massive to pull the point outside of the sun at any functional distance but so could a grain of dust with sufficient distance and a big empty universe to prevent anything else from interupting things.