That's what I believed, yet I took an objective and scientific approach (I am not much of a conspiracy believer) and it turns out the clinical trial data are out in the open for all to see and those don't lie.
https://clinicaltrials.gov/ct2/results?cond=&term=Burzynski
(among which 21 studies have results:
https://clinicaltrials.gov/ct2/results?term=Burzynski&age_v=&gndr=&type=&rslt=With&Search=Apply)
https://www.google.com/search?q=Burzynski+clinical+trials&rlz=1C1GCEB_enFR816FR816
While his treatment is definitely not a "cure for cancer", mostly because according to the clinical data, not all patients respond to it, those that do see clear improvements in their outcome, some even see complete remission.
It would be a whole other story if this was just anecdotal evidence with no data, but the data, as it turns out, is available for review.
Of course I would love to see an independent peer review and/or conducted study of this Antineoplaston therapy but it appears the authorities aren't too keen on conducting one, either because they believe/know him to be a quack and his treatment ineffective (though doing so without proper testing isn't much of a scientific approach) or they aren't interested in spending resources to do so.
Meanwhile SBM's staff, such as editor David Gorski, show clear conflicts of interest, as you see in this page
https://sciencebasedmedicine.org/editorial-staff/david-h-gorski-md-phd-managing-editor/
he is a member of the "
Conquer Cancer Foundation of ASCO"
Once digging deeper, looking at the donor list for this organization, we the see the usual Big Pharma names (Merck, Pfizer, Novartis, Amgen, Bayer... to name a few)
https://www.conquercancerfoundation.org/our-supporters/donors
That's not even talking of other members (I literally just took one of their editorial staff at random and researched his possible bias/conflicts of interest) or other forms of financial support such as research grants.
I am not sure who to believe, but I am definitely not inclined to believe in SMB's staff.