As someone who is heavily interested in the EdTech space (I've had the unfortunate luck of being a student for far too long and experienced how woefully inadequate the education system is), I was thinking pretty much the same sentiments.

Initially, I agreed with most of the failures Audrey listed. Though I started wondering if such a lengthy list could be sustained, and lo and behold, about halfway through the article I sensed a large drop in quality, with the author seeming more focused on rhetoric and being "right about others being wrong" instead of providing an objective and insightful perspective.

Some examples:
#52. Virtual Reality - I think her gripe is with VR being hyped too early, but from her writing, it sounds like she thinks the entire field is already dead and buried for education. Which would be ridiculous.
The friction with VR right now is the technology; it is too physically limiting for the benefits > the cost of change. For anyone with an open mind who has tried VR, however, I think it's obvious that it will be the future in some shape or form. Whether it's this decade, or the next, or in 2040 who knows but dismissing an entire field like this really reduced the author's credibility in my eyes.

#49. Yik Yak - Never used it myself, but from what I've heard it was anything BUT an ed-tech app..?! It's listed as a defunct social media and chat app... Guess the author was clutching at straws here.

#48, #38, #6, etc. - Author seems to have a completely unjustified pessimism toward any sort of coding that isn't related to the traditional CS pathway. I can only speak for myself, but as someone who made poor decisions out of high school and is now a (pretty decent) self-taught developer, I find the author's conclusions totally wrong. Learning to code was the single good adult decision I've made - I've found a lasting passion, and I can make positive contributions to society. Without it, I'd still be sitting around depressed all day.

#25. Thiel Foundation - FWIW, I'm not a fan of Thiel at all but I do agree that we are in a college bubble.
Audrey's snarky comment "Here’s one look at what some of the past Thiel Fellowship recipients are up to. Yawn" seems totally unjustified here. I haven't been through the list, but IIRC Vitalik Buterin (creator of Ethereum) was a recipient of the Thiel Foundation. Regardless what you think of crypto, Ethereum has had an enormous impact on the blockchain landscape. Whether or not Eth itself is successful, it's unjustified to write it off as "meh" if only for the downstream effect it has on other areas of innovation.
I think money is a terrible indicator of "success", but if we're going down that route, Eth currently has a market cap of $14.5 mil+, which would make Thiel's investment a good one (though I don't believe he had a stake).

#13. Blockchain Anything - It's sad to see the author's piece decline from what were some really valuable insights earlier in the article down to this Buzzfeed-esque drivel again dismissing an entire field. I'm not saying blockchain will or won't be successful. However, for any new & poorly understood technology, it's easy to just google "reasons why technology X sucks", link to the first 5 articles, and win over readers who don't know better.

Again - it's a shame the author appeared desparate for filler material as the list grew longer. It's particularly a disservice to herself because she made some great points at times. Adopting a more balanced tone would have been desirable. This way it'd be clearer to see that EdTech really does have huge potential for an industry that desparately needs a total remake; it's just been executed very poorly for the most part.
P.S. Lol at the author downplaying the impact of YouTube on EdTech. I'm not a huge fan but half the material for my course these days are links to YouTube videos. There is a slow but clear shift to tertiary education that is 100% online.