That would be over generalizing things. I’ve got a gateway with 3G and no problems.
It is a combination of things that make it work or fail.
As you already use the word “partial”, I guess you understand: you’d also need to disable ADR for otherwise, lacking receiving the downlinks, the device will end up at SF12 at some point.
And I guess this also implies that you’re no longer sure the problem was introduced after an update/reboot of the gateway (and since then no longer rebooting the full gateway, but only restarting the forwarder software)? And that the downlinks for the confirmed uplinks for some other node (as per the post with “here is some traffic on the same Gateway for two other nodes”) are actually not working either?