As for the OP, I do find some people know the car, though many haven't heard of it (or they've heard of it but know very little about it).
Those who know the car are those you'd expect. When charging I've had a number of people approach me about it. A Tesla owner who thought it was a cool platform, he liked it was a Honda and that the PHEV, EV and FC vehicles shared a platform. A Prius Prime owner who shopped and test drove the Clarity but choose the Toyota. A Volt owner near the end of his lease thinking about replacements. And a couple ICE owners who are thinking about a hybrid or PHEV as their next car. Most others, non-PHEV or EV owners, and those not in the market for a similar car, might have heard of it, but know little to nothing about it.
Heck, until shortly before buying, I didn't know much. When I first started looking, my very "green" thinking father urged me to get a Volt once I started looking at hybrids instead of ICE vehicles. I told him I couldn't since I'm in an apartment and can't plug in, I thought the plugging in was a necessary part of a PHEV and not just a nice addition. Around that time, I saw an ad for the Clarity on the Honda website (while researching the Accord hybrid) and was still thinking a PHEV wouldn't work at all in my situation. As I researched and realized I could charge on the public networks when I can and run as hybrid-only when I needed, I started looking more at all the PHEVs including the Clarity and found it the one that checked the most boxes for what I wanted (I might have bought the Ioniq PHEV instead if they were just more available around here).
I wonder how many people don't buy a Clarity or other PHEV (like I almost didn't) because they think they must plug in every night, or they think they need to buy an expensive charging station and have it installed at home to make it work. I think more educational efforts on how they actually work need to be made, there is no reason they shouldn't outsell the HEV version of the same or similar cars (especially with tax credits currently making the PHEV close to the cost of the hybrid, and in some cases, cheaper).