So, it turns out WP itself has like 100 built-in rewrite rules, and it raises to 200 if you add some post types without disabling their rewrite rules, and I was worried about adding 20 simple rules. Duh.

Since GPDR, privacy popup screens have been a nightmare. Just discovered fanboy list. Add it to your uBlock =P

One of my answers on Stack Overflow has just been accepted. After 6½ years.