The minimum supported glibc version is now 2.31 and the compat checks were dealing with symbols added in 2.28 and 2.29.
This concludes backport of [[https://github.com/bitcoin/bitcoin/pull/22405 | core#22405]], [[https://github.com/bitcoin/bitcoin/pull/22930 | core#22930]] and [[https://github.com/bitcoin/bitcoin/pull/25233 | core#25233]]