here's the thing: everyone complains about late capitalism and how alienated and isolated we all are. everyone acknowledges this, and reassures each other of this, alone.
you need to get out of yourself, and your head, and your small bubble of one, and you need to go see old friends, or former friends, or people in your social circle who are just meh, or your annoying roommates, or your co-workers, or your former co-workers, or your lame family members, or your lame and bigoted family members, or strangers at a bar, or whomever, and party. meeting people is praxis, strengthening relationships is praxis, making yourself seen and vulnerable to another is praxis. please, guys, go out.
this, here, now, is a facsimile, mediated through a thousand screens. go kiss, go get kissed, go reject a kiss, go be denied a kiss. go out.
This persons condescension is ironically a symptom of capitalist alienation, a combination of being so far removed from the real situations and lives of others that you think your ineffectual platitudes are the word of god and not knowing how to sincerely relate to others about having a good experience other than talking at/down to them.
Speaking of capitalist alienation, I've had plenty of exchanges with that user, and most of them concluded with "touch grass" and related thought terminating cliches, all in defense of some treat or another.
The framing of the "advice" is structurally sus, too: agreement is presented as synonymous with compliance, with the implication that disagreement is a personal failing.