I don't think everyone is on the same page about Ubuntu being a consumer distro and not a hacker's only distro... I have definitely noticed a decrease in the stability of Ubuntu releases over the years and it's attitudes like this that seem to be in part responsible for it.
EDIT:
Oh I kept reading, this is better:
"Rainer, a better solution for international calls is to stop using Skype (which is closed source, and frequently has problems with its Linux client) and change to a service that supports standard protocols (SIP etc.), e.g. using Ekiga"
Yes, the client should change their software and infrastructure to better suit your product...
This makes it pretty much impossible for me to "sell" Ubuntu to any of my friends who aren't programmers AND tinkerers (many of my programers are too busy being productive to be interested in dicking around with making things work anymore, and increasingly I hold this view).