Thompson said he had not read all of the report by former Telstra CEO Dr Ziggy Switkowski reviewing Essendon's internal governance, practices and procedures in the wake of the Australian Sports Anti-Doping Authority's investigation into the club's supplements program between November 2011 and August 2012.
"He's (Switkowski) pretty much got it spot on, I think, from what people say around Essendon," Thompson told Fox Footy on Monday night.
Asked if he was surprised by anything in the report, Thompson said: "Not really, no."
Earlier on Monday, Essendon chairman David Evans said the report revealed "a disturbing picture of a pharmacologically experimental environment never adequately controlled or challenged or documented within the club".
Asked about whether an environment of pharmacological experimentation had existed, Thompson said: "That's what it says, it must be true."
Thompson refused to be drawn on whether Essendon "should be in trouble for what they did" but said he hoped that Switkowski's recommendations, which include "pioneering work with supplements and exotic treatments should be left to the Australian Sports Commission", would be taken up across the AFL.
"It's out there that these sort of practices are bordering on not being healthy," he said.
"If there was some control on any supplements we had, if the AFL controlled it or ASADA controlled it, and clubs stopped doing it, it would be great."
Meanwhile, Bomber ruckman David Hille will miss Essendon's next two games because of a trip to France to attend a wedding.
Thompson said Hille had been coaxed back into playing this season after considering retirement and the trip had been part of Hille's 2013 plan.
Hille will miss matches against Geelong and the Brisbane Lions.
