FQDN node and icmp monitor

I don't get what is relation between non ephemeral node status set by DNS query result and members availability.

Scenario:

• DNS not responding (after ephemeral nodes created)
• Non ephemeral node with icmp monitor
• members without monitor assigned

Results:

• Non ephemeral node is down (Offline (Enabled) - The DNS server(s) are unavailable)
• Non ephemeral member is down (Offline (Enabled) - The parent node is down)
• Ephemeral nodes are UP (icmp monitor)
• Ephemeral nodes are Unknown
• Pool is Unknown

Traffic directed to VS using pool is handled without any issue - reaching backed servers

Same situation when there is no monitor assigned to non ephemeral node.

So what is the point of making non ephemeral node down because of DNS not replying when traffic is still processed by VS?

Piotr