Is it reasonable to trust a Reddit account that makes accusations but gets one of the key accusations wrong? It looks like the account was setup simply to badmouth GlassWire.
GlassWire provides the ability to block itself as shown below where I’ve blocked it myself. If you do this then you will have to check for updates manually but that is not difficult because, as the warning message says, you just go to their download page:
FYI, automatic update of GlassWire is one of the most requested features. Here’s some of the many requests so those users don’t want to block GlassWire’s network connection: