Failed to execute routing table for some devices

[mrmaximas]

I started generating a map with routing table, most of the TUYA & GLEDOPTO router devices did not return the routing table.
For example:
https://www.zigbee2mqtt.io/devices/TZ3000_mw1pqqqt.html#tuya-_tz3000_mw1pqqqt
https://www.zigbee2mqtt.io/devices/WP33-EU_WP34-EU.html#lellki-wp33-eu%252Fwp34-eu
https://www.zigbee2mqtt.io/devices/ZWSM16-1-Zigbee.html#avatto-zwsm16-1-zigbee
https://www.zigbee2mqtt.io/devices/ZWSM16-2-Zigbee.html#avatto-zwsm16-2-zigbee
https://www.zigbee2mqtt.io/devices/ZN231392.html#tuya-zn231392
https://www.zigbee2mqtt.io/devices/QS-Zigbee-D02-TRIAC-LN_1.html#lonsonho-qs-zigbee-d02-triac-ln_1
https://www.zigbee2mqtt.io/devices/QS-Zigbee-D02-TRIAC-L_1.html#lonsonho-qs-zigbee-d02-triac-l_1
https://www.zigbee2mqtt.io/devices/GL-C-009P.html#gledopto-gl-c-009p
https://www.zigbee2mqtt.io/devices/GL-SD-301P.html#gledopto-gl-sd-301p
Is this a bug or a feature?
Thanks!

[Nerivec]

Some devices (stacks really) do not implement routing table support (the original frontend is always-disabled on that option, so it never appears).