That's really hard to quantify. I've had many discussion with friends where I though the code was decent only for them to say it's the worst thing in the world.

That's really hard to quantify. I've had many discussion with friends where I though the code was decent only for them to say it's the worst thing in the world. The reverse is also true. I've seen terrible code where others don't react as strongly as me. It really depends on what you consider terrible. Eg: Bad maintainability, complexity, no documentation, convoluted, etc. I guess there's also the question of what do you consider a great product? Little bugs? Does it need to be modern? Does the design matter? What do you mean cruftiness? That it's old? For me it's about doing the job it needs to do. WordPress for all its flaws still is my go to ecommerce platform (w/ Woocommerce) since it just works.