You ignored the point, the Civic Hybrid already exists, they named it the Insight. You can already buy the 10th gen Civic based Insight right now. Seriously, they changed the body panels slightly but it's the 10th gen civic chassis, and the interior is 95% the same except for the Accord gauge cluster replacing the Civic gauge cluster, and the Accord Hybrid button shifters.
Arrive in style with the Honda Insight. With breathtaking design and tech, you won't believe the 2021 Insight is also a highly efficient hybrid.
automobiles.honda.com
They say they named it Insight to "target an sophiscated driver" unlike the Civic

But the fact is they made Civic Hybrids in the past and they were absolutely awful, they no doubt wanted to separate the branding or you'll have car reviewers minging about Civic Hybrids having problems 15 years ago.