99.999% of applications which decide to occupy 63GB of memory are poorly written applications. No amount of hardware will fix this and OS/hardware are likely innocent. What about simply quitting the application and restarting? That should reset the memory leak.
I have M1 mini with 8GB RAM and can run Parallels with Windows 11 ARM in it with reasonable speed and no complaints about memory. I am sure this pages memory to SSD like crazy, but my memory indicator is still green and system is still responsive. That suggests that memory management of current ARM macOS is pretty good.
As far as I can say from Google searches, Anytrans serves to move stuff between iOS and macOS, and that should not require any significant memory footprint. If it does, it is bad application, and needs to be fixed by authors - not by going to crazy hardware specs.
I would agree it shouldn't need this much ram. When getting the data from a back up made using AnyTrans, this issue occurs and it also takes forever to complete and has yet to do so. I am thinking it's using my ram as a cache for the somewhat large amount of data in the back up. Simply pulling the data from my phone is also seemingly a never ending process. I can repeat it and it functions pretty much the same. although the last time, my computer didn't really miss a beat. The times before that I had an extremely laggy computer.
Outside of Any trans. I would typically have Word, Outlook, Excel, Messages, Notes, Safari with an unknown number of tabs open, and music. With the outlier trading music for FaceTime. I was thinking I should probably be in 32gb of ram for my needs and desires of longevity, but that wasn't available at the time with the deal.