So are suggesting that anyone who doesn't speak Welsh and has no interest in it (bearing in mind that Cardiff is an overwhelmingly English speaking city) is some sort of extremist? That would be like making sweeping generalisations about Welsh speakers and their attitude to English people.
No, but it’s extremely interesting that you believe UKIP are extremists.
A failure to personally understand the Welsh language on the part of any individual does not decrease its value to the heritage or marketability of Wales as a nation, or certain organisation within Wales.
Rather, these people seem to insist on projecting their lack of understanding as a need to have it not appear in their daily lives so as to avoid the disappointment of their not understanding.
What people should do is avoid spouting unnecessary political views (and particularly silly, disprovable ones e.g. Americans know what Cymru is because it has been utilised heavily in Welcome to Wrexham) on an ice hockey forum.
They should take their small minded views and keep them to forums where people might want to participate in that conversation, rather than forcing it on those of us who don’t want to see it on, once again, a forum about ice hockey.