A common complaint in 2021 was the inconsistency of Bridge Mode. In many firmware versions (especially early 2021 builds), Bridge Mode was either buggy or completely disabled, forcing users into a "Double NAT" situation if they wanted to use their own high-end mesh router.
Utilizing scripts via the router's API to force the modem to latch onto specific 5G or LTE frequencies. zte mc801a firmware 2021
To give context, here is how the 2021 software holds up today: A common complaint in 2021 was the inconsistency