The latest update from Hubspot support
"Currently, this is only being reviewed by the product engineers, I do not yet see this as something that is in planning or on their radar as of yet. " so it doesn’t seem like they take this seriously.
I suggest sharing this with other people in your company to comment and upvote this issue and also raise Hubspot support requests until it gets the attention it deserves. Here’s why this feature is critical:
1. GDPR
2. Spammers - lots of spam submissions that skew data occassionally or just irrelevant contacts we dont want in our reporting
3. Testers, people who test live forms = need to manually filter them out and it also skews conversion rates