Never mind. I got the full text, which is from 2016. www.bmj.com/content/355/bmj.i5792.abstract (You'd need to log in from a University or research account)
The mentioned 2004 analysis is www.clinicaloncologyonline.net/article/S0936-6555(04)00222-5/fulltext
The debate that accompanies the opinion article is certainly interesting, with different view points.
www.bmj.com/content/355/bmj.i5792/rapid-responses
Not sure what you wanted that quote (missed the quotation marks there) to show, though.
The review itself is from 15 years ago.
The review gives a more detailed analysis per cancer and per stage at diagnosis and treatment options.
The problem with what you've been saying, and seem to be trying to say is that it's different to say that chemo does nothing for cancer, or that chemo causes cancer, than to say that chemo is useful only in certain conditions or against certain cancers. That's fine. Doctors know that and advise on treatment based on knowledge about specific cancers. Treatment varies: surgery, radiation, chemo, combinations of all three. Even other options.
The 2016 comment really should have been based on more recent data, but reflects the fact that there are different optimal options for cancer treatment (and there isn't just one type of cancer) and that the options also depend on stage.
I'd agree that for metastatic cancers, chemo (which is really a last resort, because it's basically beyond surgery) offers little benefit regarding quality vs length of life. I've said many times among friends that I was fairly happy that my dad didn't discover his cancer until virtually his deathbed, while other people of similar age suffered for the entire length with little benefit regarding life extension.
However, I'd not tell people to avoid chemo, or that it's not beneficial at all as a blank statement.
As none of the authors said either.