The best way to avoid this is to leverage the post queue. Sadly, spammers always find creative ways to bypass filters, but the post queue will stop them dead.
The lazy loading never really worked all that well, and was originally added because we wanted to stop issues with the browser viewport shuffling back and forth if images were being loaded.
Browsers are taking steps to address that now, and so that's why we're stepping out of their way 🙂
