The registrar relying on Google Safe Browsing as a “trigger” for suspension is the most horrifying thing I’ve seen in a while. This basically makes the entire TLD unviable for serious use.
The followup from that would appear to be don't use any domain that Radix controls.
This is the real story. This is 100% a problem with Radix. Safe browsing targets the website not the domain. No reason a registrar should be suspending an entire account over something a company reports. Black-holing the A and CNAMEs on a subdomain? Maybe..... But even then I don't think it's the registrars place to do that. Freezing the entire account? Absolutely not.
Who said serious use is their business model though.
.online is one of the many TLDs that charge a dollar for registration but bump the price to $30-$35 for renewal. So far, this seems like a good signal to tell apart serious TLDs and ones just preying on customers who sort by cheapest (or capitalizing on one-off phishing domains).