I’m not scolding you, I’m simply making my point and providing evidence on why W3C validation is not somthing you should loose sleep over. I’m trying to reassure you and broaden your knowledge.
Trust me, if this was an issue, I’d be out of business, infact if it where that bad you wouldn’t even be here as the Blocs site is built with Blocs and google wouldn’t rank it so no one would find it to buy it.
I don’t think I’ve ever seen a modern site pass a W3C validation test. I’d love to see some good modern examples.
I’ll take a look at the form issue and I’ll see if I can improve the validation, however I’m not sure it’s going to be possibly to get a full pass especially if you use embeds, but I will try to improve this