Does anyone know what they could mean here? I get that having more open connections and slow requests is not great, but there are popular attacks people will try against them in this case. They already have to handle pathologic cases of slow requests, so handling some small number of slower clients shouldn't be an issue.
Or are they talking about some other problem?
Just try one of the akamai endpoints to test it. (E.g media.steampowered.com)
For me 1.1.1.1 serves akamai singapore IPs, while 8.8.8.8 serves IPs of my ISPs akamai cache in Sri Lanka.
If your ISP has a bad route to 1.1.1.1, this just gets worse.
In what case would some extra delay be worse than no access at all?