Yeah, like Morph said, don't delete anything in the WinSxS folder.
This folder is the broken windows architecture bandaid system. 🤣 There are 100s of slightly different versions of same library file in that directory.
There should only be one version of each library file. But over time they broken backwards compatibility.
Say some old game program (TR3?) would draw a window on the screen, it would call the drawWindow function in draw library file and it would do the expected operation. But over time Microsoft made changes to how and what the drawWindows does in that file. The changes to these files are for security updates, new versions of windows, new features etc. . . . But these changes can causes your old game program to fail or crash or whatever. SO Microsoft sticks every version of the file in the WinSxS, then for compatibility. This way the old game can load the exact version of the library that existed when it was original released. They made thousands of changes, so there are thousands of files.
This help us to run all our old TR games on our WIn10 PCs
BTW 13Gig is not much space anymore, SSD are really cheap. Given the backward compatibility is good with Windows, the loss of 0.013% (13/1000) of my 1T drive for these files is nothing.
Apple computers have crap backwards compatibility, their programs ran on PowerPC CPUs in Macs; about 2005 they changed to Intel. Your TR3 for 1998 PowerPC Mac would not work on your newer intel CPU Mac. Most of my old ipad apps no longer run on the new ipad OS. But i can run my original 1998 TR III CD in my Windows 10 64bit os with a few patches.