TP-Link became a big no-go for me as soon as ax came out and I saw that they required account registration[0] for managing a personal, local router. Probably has to do with the fact that they're not western-owned and are 'legally required' to have such a system in order to be covered from 'borrowing' your data. I expect other vendors(Huawei,etc) to do the same, and it's insane that people don't revolt against such practices, especially considering we still have such vendors being installed by default in people's homes by the ISPs.And whilst a router is replaceable by the end user, something like an ONT is harder to find in most places, and the ISP doesn't usually give config details for an ONT.

[0] Edit: An online account for the mobile application, not the web interface of the router itself.