Google routinely flags my genuine AWS invoices as possibly dangerous, despite me routinely clicking the "this isn't dangerous, I know what it is" button. So yes, I think it's totally possible that engineers who build web crawlers can't build reliable email classifiers.
Google seems to do this from ANY mails coming from some of the major VPS providers. They do the same on my linodes as well, despite me having SPF, DKIM, DMARC and even reverse DNS properly configured......
Luckily for me, its mostly just for my own usage and Im not using Google to send anything, its for things like email alerts to my google workspace account...
