While this is true, romance scammers also often try to obscure/spoof their true location - so I can see why it'd be something the Tinder algos would be sensitive to

Just speaking from experience and anecdotes from others. I’m not arguing it makes business-sense. As the OP is arguing, the false positives are probably a small enough percentage of users that companies haven’t found it worthwhile to prioritize. And even if it is, it can be hard to tell from readily available data who’s a false positive in the first place when you don’t have a proper customer support organization.