A sensible question. The answer is, of course, that the vast majority of people with CFS and ME don't attack researchers. Nor do they condone such attacks by a few people.
Most of what Sharpe, Wessely et al. call harassment is valid scientific criticism of their research methodology, not only by people with ME/CFS but by many scientists. Have a look at the Journal of Health Psychology special issue referred to in the article, or David Tuller's articles on the Virology blog science website.
What Sharpe et al call good science is not recognised as such by hundreds of world class scientists. Unblinded clinical trials with subjective outcome measures, outcome switching, spending a quarter of a million pounds trying, in the end unsuccessfully, to hide their data from reanalysis according to their own protocol are not the marks of good science.
People with ME are desperate for good quality science, and are themselves donating to support it. There has been a good international symposium on ME research in Melbourne this week with lots of excellent scientists doing high quality research to try to get to the bottom of the serious and baffling illness. That is welcomed by people with ME/CFS, and the researchers find patients enthusiastic and co-operative.