Obviously his action was a matter of concience rather than finance - as it may have been for a lot of the supporters of direct action.
As a father of adult children, I accept that they are free to do as they wish - within the law - and my approval is not necessarily a factor that would prevent certain behaviours.
However, i hope that would never behave in an inappropriate manner - which is my stance as a parent, and i am sure Mr Gilmour's position as well - his status as a world-famous musician is not really the issue.