I happened to notice a post by tangent here:
viewtopic.php?p=1040476&#p1040445
where an ax lite (with radio disabled) is depicted as being a better choice than a Hex with roughly the same cost.
Of course there is one interface less, 4 instead of 5, but for the use I intend this hardware for, I found a couple of possible setups (one using only one router, one using two of them), see starting here:
viewtopic.php?t=200213#p1040830
that both need not more than four ports.
The idea of having the possibility of using the ax lite as an access point later or in another installation, should the performance not be enough in the future is interesting.
Also, the powering via a "normal" USB-C 5V 2.4 A power adapter would probably make it easier to deal with, it seems like these are common for tablets.
Any drawbacks or other possible reasons to still prefer the Hex?