alt Hacker NewsWonderful! There's a lot of advice online about how essentially evil it is to talk to strangers: They're busy, they have headphones in, they might think you're hitting on them (God forbid; nothing could be more evil than attraction). Ignore it. It often as not boils down to fear and neuroticism from terminally online introverts (and sometimes plain old misanthropists) raised in a hyper-individualist culture and glued to devices sometimes from infancy.
Fair enough if an introvert just wants to be left alone; we should obviously never force our company on anyone (nor do the mentally healthy among us have any desire to do so, because we have empathy). However, people like that will let us know that they don't want to talk when we approach them, either directly or via body language and the nature of their replies. For many others, they're starving for social interaction, and it might make their day for you to reach out. This is what makes outreach worth it, in the end, despite the risk.
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I will happily stop and chat with you if you demonstrate that it is worth the time and interruption (if I was lost in thought, that will take at least 5-10 minutes to get back to).
If not, I will not let you know. I will just fume, blame and judge you for some time after.
I find it so bitterly ironic that the people whose opinions we read the most of - the terminally online Redditors and tweeters - are exactly the kind of people we should not be listening to.
Like you alluded to, the terminally online people who post the most tend to be those with neuroticism, isolation, severe anxiety, etc. There's a famous Reddit post about this I can't seem to find - "Everyone Online Is Insane" or something.
I really think this is why the past decade+ of American culture, politics, and society has been so off-the-wall insane. The Overton Window - another overused Redditism - of society has shifted towards the opinions of the neurotic and anxious. Those are the people whose words fill the comment sections and posts that we all read, which then infuse our minds to expect these thoughts as the baseline/median opinion of society.