Respected Professional website is a bit strong. If it does what it says on the tin it's a "rumour" network. The forum a lot of "professional pilots" are using is in fact Private Flying LAA/BMAA/BGA/BPA as was Stewmath when he made his remark.
I would suggest that any Journo quoting this site is wrong to state professional.
The Press monitor places such as this because they are lazy plagarists and although Stewmath may have jumped the gun a bit I would hope he continues to contribute as opposed to being driven away by his "betters"