The truly virtuous don’t tell others how to be. They do want what’s best for others, but will never virtue-signal anyone else by attempting to guilt them into being “good” by their terms. Bottom line: Good people don’t boast about being good—they just are.
Then you have the extreme end: Proudly broadcasting easy condemnation of others who aren’t doing/believing as you do. This is the worst way to get anyone to side with you on your platform or cause. I have NO idea why it works for some, but perhaps they allow themselves to be vulnerable to bandwagoning (not meant as an insult, I’ve been guilty of hopping onto ideas and things, myself), or are simply uninformed and lazy.
This bag is a safe/weak example; there are other, worse/more strongly-worded phrases and mantras of morality cues that are being freely spewed from the mouths/posts of these types of “do-gooders,” scornfully at their poor, inferiorly-minded fellows who are “way less cool and enlightened,” but you get the idea. The rise of protest culture these days has made it easy to find many other examples on your own (obviously, the gaping, cancerous, oozing hole of Twitter is one source).
This platitudinous bullshit is less “brave” than it is boorish, more selfish than saying it “slays,” and much more vain than valorous.