There’s more to the ivermectin story than having anti-parasitic properties, even though that’s how it became famous. It also appears to have anti-viral properties [1]. And there have been 60+ studies showing its efficacy [2]. Just because it has anti-parasitic properties doesn't mean it couldn't also block biological pathways in viral infections as well.
[1] https://www.sciencedirect.com/science/article/pii/S016635422...
FWIW researching it is good and should be encouraged but most quality clinical trials so far like NCT04429711 and NCT04391127 haven't been very promising. Those which do show a statistically significant result have been flawed in one way or another. Hopefully when the Principle Trial reports people will get over it one way or another, but it's not looking promising. It may help somewhat at best, but it's no miracle cure.
Right, but in all the contexts I've heard it, it's not just a "dewormer", it's a "horse dewormer". That's technically true, but it's also FDA approved for human consumption. Making fun of people for consuming "horse dewormer" is like making fun of people for consuming "horse tranquilizer" for their depression[1].
[1] https://en.wikipedia.org/wiki/Ketamine#Depression