Once upon a time
My domain xtuc.fr is very likely the first domain I ever bought, it was registered on the 2010-07-07T14:08:06Z.
Over the years my old domain has served many purposes, but it's not in use for a while now.
Anyway, it's just a domain...
The spam
The emails are mostly noise (aka spam); AWS or Facebook notifications, wordpress.com subscriptions, old mailing lists, or whoever bought a list that included it, online forums, etc and from time to time I see something interesting.
Interestingly, I didn't register a Facebook account with that email nor do I subscribe to hundreds of Wordpress blogs.
Mailway
Note that I'm using mailway.app here, but other similar services should work as well.
Here is a screenshot of the routing rules I have configured:
The result that is many emails are dropped before they can reach my inbox, even if they will likely be moved to the spam folder.
Here's the result after a week:
Conclusion
Even if the emails mostly went to the spam folder, it greatly improved the signal-to-noise ratio which made it possible to catch interesting emails.