You got exactly one suggestion for a gateway to which you can connect an external antenna without specifying any requirements. If that is exactly what you were looking for then you got your question answered.
More experienced users on the forum know that you need the gateway for some purpose (whichever that may be). If some gateway is suitable for your application depends on your requirements, which you have not made clear whatsoever. So when asking for advice it will be useful to provide some relevant information.
Requirements for a gateway can be many e.g. price, robustness, user friendlyness, indoor or outdoor use, for hobby or professional use, tweakability, upgradability, if indoor use is it for a small home or a large building, if outdoor use what coverage would you need, wired or wireless network connection, power over ethernet, mountability on a pole/mast etc. These are all aspects that can play a role in the selection of a gateway.
You will have requirements for at least some of these aspects, so why not share them when asking for advice.
Not sure where you get the “irrelevant” from.
The request to you was to provide some information, i.e. requirements for what you want to use the gateway for, which you did not.
One of the main issues on the forum is people asking for help but hardly providing any information about their case resulting in assumptions, guessing, unnecessary questions and responses not relevant for what the OP is looking for (another is new users asking for help without searching for information that is already available on the forum/questions already answered). That’s not efficient and is often wasting time from other users who are trying to help.