Some food for thought:

The old autotools build did not have this problem since it:
 - was creating a static libigt library
 - yet ^^ would lead to slightly longer build times and overall larger bundle
 - ^^ would only pull the required dependencies into the linking process

For reference:
$ objdump -x /usr/bin/intel_gpu_top  | grep -w NEEDED
  NEEDED               libpthread.so.0
  NEEDED               libc.so.6

If it were me I would:
 - static link
 - drop all the extra rpath from the meson build
 - if size is an issue - enable LTO