Glossed over in the story: "It's not that hard if you know what you're doing and have some money."
A few notes...
"It could cost $30,000 for a very basic setup." Never mind that someone with that level of skill could save that much in a couple of years. I know people who spent that much on sports equipment in a similar timeframe. Not all hackers are dirt-poor. Or they could get a middle-management job at a distributor and steal a few of the more expensive pieces. Some people have patience, you know.
"It's very hard to do the really subtle and clever things, like drug delivery bacteria." Conversely, it's nowhere near that hard to breed a better form of anthrax, not to mention a whole lot of other microbes. Anthrax is EASY to get - it's found on every continent, and there are regular outbreaks around the world. The same goes for many other nasty diseases.
"You need high-level biocontainment to be safe." But that's not hard to do for small samples, and relies on 1950s-era tech.
"You need very specific training to do it right." Well, thank heavens that we don't have hundreds of people with that sort of training. Oh, wait, we do. Well, at least 100% of them are sane. Er...
"You can't test on monkeys." But you can test on small, isolated communities of humans. By the time anyone notices it was man-made, it's too late. Nothing will happen if the bugs don't work, and if they DO work, it will take more than a while for the government to catch on.
The only issue is production-level amounts - making a few ounces for a major anthrax attack, for example. You don't have to make the cool spore/long-term dispersal agents for this purpose.
Generally, the big blind spot is "someone planning this will want to do it exactly like 1970s germ warfare types did, with tons of long-duration anthrax spores and well-tested lethal strains." Nope, not any more than mad bombers will all make highly-engineered explosives with anti-tamper devices and multiple remote detonators. They'll cut corners, take stupid risks, make a lot of mistakes, and a lot of them will die at home.
But it only takes one.