default or selected kernelversion does not have config value CONFIG_NF_CONNTRACK_PROC_COMPAT.
Result is shown for kernelversion 6.5.1

proc/sysctl compatibility with old connection tracking


Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>IP: Netfilter Configuration
└─>proc/sysctl compatibility with old connection tracking
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This option enables /proc and sysctl compatibility with the old
layer 3 dependent connection tracking. This is needed to keep
old programs that have not been adapted to the new names working.

If unsure, say Y.