I've replaced a couple dozen. When I started out, all I had to do was buy a cheap (but reliable) multimeter and spend a half hour or so watching YouTube vids on how to test those kinds of capacitors.
They can be deadly dangerous if you don't take precautions. It takes very little skill to replace, but the power to the compressor needs to be cut and the Fan and Herm terminals do need to be grounded/discharged to the common post before handling.
It's still a very basic repair, though, and even in the +100° temps we've had here, it was worth the effort and only takes about ten minutes to remove, five to test, and five to replace and close it all up.
Yeah the way you describe it makes it sound like we could build an AI forum where each user is the only one in there and all the rest are ai bots whose only purpose is to generate the content and interaction we're looking for.
I think Reddit is just the beta version.