I’ve honestly never known which sites use DNSSEC and which don’t. Browsers don’t warn you when it’s missing, and most people probably wouldn’t even know where to look.
It’s hard to care about something like that, even if it really does matter behind the scenes.
I think you're confusing DNSSEC with HTTPS. DNSSEC is how you go from an internet name to an IP address, so it happens before your browser starts talking to the website.
It’s hard to care about something like that, even if it really does matter behind the scenes.