Look at an X/Y pad as a tool, that can be used in the patcher, for example for controlling more than one parameter with only the mouse. I think this is a pretty valid usecase. You only have one mouse, right?
Well, I have seen Jaffasplaffa saying this exactly the same before. And the answer for him was "oh it is not only for stand alone mode, it is aimed for many purposes"... So, no, it is not really only intended for stand alone use. It has many usecases.
But TBH I dont see the problem in having tools that is mostly usable when only using the patcher. If you dont see any value in it, then dont think about it. There are a lot of things I dont find valuable, I just choose not to use it. But that is my 2 cents.
For example all the integer boxes cannot be assigned to midi, for example ctrl/i. Should that object be thrown away becuase it does fit in all usecases? I dont think so. Likewise with an X/Y pad.
I would find an X/Y pad valuable and I am pretty sure a lot of other would too. Not everyone have loads of hardware to control their Axoloti, not everyone has got the ability to neither write their own objects or build their own hardware. And for people like this, an X/Y pad would be a valuable tool.
No it does absolutely not become pointless. I think this is really vague argument. It shows that you expect that everyone uses Axoloti in the same way you do and that is the only use of it. Ask the developers and I am pretty sure they will tell you Axoloti has got many use cases.
But hey, Always up for a good debate