Scab? Have you come on a time machine from the 1970s or something?
As for tax avoidance, virtually everyone arranges their affairs to minimise their tax liabilities, including many of those who shout the loudest against it such as the Guardian newspaper.
Scab is till used and completely valid in regard to Wogans treachery.
Some sweeping generalisations and wild assumptions you have made. 'Almost everyone.... "? Nonsense!
Wogan became a multi millionaire largely from opportunities afforded to him by a publicly funded broadcasting organisation. It's not too much to expect him to pay his fair whack in tax. Especially as he would still have had his £millions.
As for the Guardian newspaper. If you think for one moment that it represents ordinary working people you need to get better informed.