This seems needlessly conspiratorial. Dexamethasone’s utility in treating Covid-19 was found by a top-notch RCT (Recovery). It is also quite cheap. ‘Pharm’ (presumably you mean scientists sceptical of ivermectin) made no noise about that.

Doctors are refusing to use Ivermectin because they can get in trouble with the medical boards for prescribing an unapproved covid treatment.

https://www.freemalaysiatoday.com/category/nation/2021/06/16...

https://www.medpagetoday.com/special-reports/exclusives/9241...

Who's running the disinformation campaign?

Before that RCT, any doctor that recommended using steroids was ridiculed and labelled as spreading medical disinformation.

It's a miracle that the Recovery RCT showed any statistical significant benefit, due to the low doses and the short durations that were used there.

After that RCT, and even a year later, health authorities are still recommending the same anaemic doses, despite evidence showing that pulsing higher doses of methylprednisolone saves lives in severe cases.

https://youtu.be/LkIKCbwBcLU?t=822

If it seems conspiratorial does that mean it's not true?

The vaccine manufacturers are also some of the biggest advertisers in media. Does anyone really believe the media companies are going to report anything that paints Pfizer in a negative light?

One look at the Aducanumab coverage is sufficient to show that journalists have no problem reporting negative news about big companies. Ivermectin isn’t getting positive coverage because there isn’t good evidence that it works. Contrast with the cheap steroids which uncontroversially became a standard treatment because the science showed efficacy.