The existence of the toxic gas phosphine is rather weak evidence, particularly on a planet with temperatures at which lead is a liquid. If nothing else, these temperatures would tend to racemize chiral molecules, and chirality is believed - correctly I think - to be the truest signature of life - but even it is not absolute - chirality exists in abiotic systems.

A more likely origin for phosphine is connected with the extreme temperatures on the planet.

could produce all kinds of things, but peer review in a reputable journal should mean there's a decent argument put forth.

I'm expecting some misinterpretation of spectroscopic data to turn up. Just what nature that would take, I can't imagine, especially since there's no details of what they were looking at.

Interestingly, the link is to a cached copy of an article at earthsky.org which no longer appears at that site. Did it get pulled ??

...can be quite different.

I believe I've read somewhere recently - it's not high on my radar screen - that Venus is thought to be tectonically active, like Earth.

If so, there are surely localized areas that are highly reduced, and not necessarily by life. Earth's core is thought to be reduced, even though it has an oxidizing atmosphere.

To be honest, phosphorous chemistry has not been a major focus of my life. When I was a kid, I was interested in some issues connected with organic synthesis, and used to dehydrate my THF over P2O5, or chlorinate or brominate carboxylic acid with phosphorous halides.

Mostly these days, I'm interested in its analytical chemistry, if at all, and then generally in its proteomic importance and/or genetic importance. That generally comes down to straight up phosphate/phosphoester chemistry. (I did work briefly on an interesting rare disease that involve physiological pyrophosphate, but it wasn't all that big a deal.)

But I understand, from a quick Google Scholar Search, that phosphine can be generated from phosphides exposed to acid. It is conceivable that ancient phosphide deposits exist somewhere in the planet and have been exposed recently to its very acidic atmosphere.

Or it may well be, as you suggest, a function of misinterpretation of spectroscopic data. I would be very, very, very surprised if the stated supposition proved to be viable.

by mistake (I found it with a Google search, after seeing others talking about this, and then saw it was no longer available on the site).

to our life here.

What exactly is not right?

The blog entry you quote says it took him four years to figure out the spectra for phosphine. I have no idea why it would take so long, but after four years of work I'd guess he didn't just sit on the info. So now others also know what phosphine spectra looks like. And the OP talks about the (possible) discovery of phosphine molecules in Venus’ atmosphere. So ... where exactly is the conflict?

perhaps phosphorus laden dust is reacting with lightning in that temperate zone in the Venusian sky.
But if there are critters in Venus' sky, I hope they name them "Ymir".

https://gwangipedia.fandom.com/wiki/Ymir