This check prevents fragment reconstruction for unreliable messages. Is this intentional?

[niuk]

https://github.com/KillaMaaki/ReliableNetcode.NET/blob/c5a7339e2de70f52bfda2078f1bbdab2ec9a85c1/ReliableNetcode/Utils/IO/PacketIO.cs#L116-L117

The check here will fail if the channel ID written into the most significant two bits of the prefix byte at https://github.com/KillaMaaki/ReliableNetcode.NET/blob/c5a7339e2de70f52bfda2078f1bbdab2ec9a85c1/ReliableNetcode/ReliablePacketController.cs#L302 is anything other than Reliable. But when I changed the condition to allow any channel ID and sent dozens of unreliable greater-than-FragmentThreshold-sized messages per second, everything still seemed to work. Is there a reason that this feature is disabled?