Ya, that's pretty good. I can't speak to the science either, but the pro-ivermectin cause follows just about every typical pro-conspiracy tactic. The in-vitro/in-vivo (in a petri dish vs. in a person/animal) grift is a super common one. Realistically, cancer has been cured in-vitro. There are tonnes of things that'll kill cancer cells in a dish. They often fail to mention it'll also kill you in the process.
The meta-analysis tactic is another common one. A meta-analysis basically being a review/summary of the prevailing studies on a subject. They either don't use them or they misuse them (as explained in the article you posted.) You're going to get false results if you include junk trials in your meta-analysis. There could be 1000 studies proving raspberries are healthy, but if there's one (usually of dubious quality) mildly suggesting they're poisonous, guess which one they cite?
Pharmacokinetics: a generally basic concept that in order for something to be "medicine", it has to do its job and safely. Firstly, you have to prove it has affect in-vitro. That is, if ivermectin can be proven to stop COVID in a lab study, then it MIGHT be worthwhile to further study. Lots of studies conspiracy theorists cite are simply proof-of-concept studies. That is, in vitro, they show possible benefit. They then interpret that as "obviously this is the hidden cure." But after an in-vitro study is successful (and of a high quality), then they have to move on to other studies and most don't get past this. Real scientists then go "well, it looked promising but didn't pan out." Which, to whack-jobs, reads as "big pharma is hiding the cure!" For in-vivo studies (in animals/humans), it has to do a few things to be successful: 1. it has to get to the site: certain cells, organs, etc. 2. it has to have effect (it has to work). 3. it has to get to the site with sufficient quantity to do it's job. 4. it has to do all this while being safe and not causing harm. It's this 4th one where lots of potential treatments fail. Chugging gasoline will likely meet the 1st three for a GI virus, but it's obviously not going to meet the 4th.
I'm sure there are tonnes of effective cures for various diseases out there, but they can't meet that 4th requirement of being safe.
It's essentially the same in reverse. That is, things that the FDA, WHO, etc. deem as safe are often claimed to be poisonous, such as glyphosate (RoundUp) or aspartame (sweetener.) Some of these things can be dangerous in-vitro, but not in-vivo.
Animal studies are also often misused or interpreted (in both ways). 1. safe in animals therefore safe in people. 2. harmful to animals therefore harmful to people. I mean, this is so easily debunked. A component in chocolate is harmful in dogs yet I can consume buckets full.
Some good reading or Ivermectin from my favourite source: (Science-Based Medicine)
https://sciencebasedmedicine.org/?s=ivermectin&category_name=&submit=Search