Coming from
systemctl status efi.automount
https://wiki.archlinux.org/title/Systemd#GPT_partition_automounting
Im sure it could be handled … but Id really just rather take this as an opportunity to ditch the old discouraged /boot/efi and start using /efi as ESP.
Edit. Success. 
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 238.5G 0 disk
├─sda1 8:1 0 100M 0 part /efi
├─sda2 8:2 0 16M 0 part
├─sda3 8:3 0 97.7G 0 part
├─sda4 8:4 0 1G 0 part
└─sda5 8:5 0 139.7G 0 part /