Hint: when Graham and Morris developed Viaweb, there were no such things as templates and plugins.
This isn't to say your site isn't cool; and an all-in-one approach is maybe a good idea in 2022. But claiming it's a "fresh approach" with "no plugins and no template install" on Hacker News is a bit ironic given its founders.
Can you explain more about it? I tried to find thing related to it and just found a blog post by Paul Graham about ViaWeb 1995. All ecommerce platforms and website builders offer templates and plugins as a feature of their services, we totally remove the needs of those, so it's the difference between selldone and others that I highlighted.