I’ve heard nothing but good things about HTMX

I've only ever heard anything "bad" about HTMX and it was here on Lemmy, actually. I ran into someone who was absolutely certain that HTMX was unsafe by design because it leveraged HTML over the wire and was therefore susceptible to HTML injection attacks, specifically by injecting malicious scripts that could be ran from domains you didn't control. I tried explaining that proper utilization of access-control headers innately prevented this because they worked on the browser level and couldn't be intercepted or interfered with by HTML injection by design, but he kept insisting it was unsafe while refusing to elaborate. He was very wrong, of course, but also very confident.