You could speculate that. Then you could ask yourself why a climate activist would create a situation where cattle starve at the plant and are put down and not used economically.

There are thousands of cattle in transit to just one of these facilities every hour of every day. Most are not equipped to feed incoming cattle - they arrive hungry and with minutes to hours to live. If you’re annoyed about the climate, forcing a manufacturer to throw out and waste hundreds of tons of perfectly fine beef does what, exactly? Send a message?

This isn’t spiking trees. You’re dealing with live animals. I have a hard time believing an activist environmentalist would be fine with exacerbating an animal welfare situation they already don’t like. Putting thousands of cattle through even worse experiences than usual. Yeah, no.

Source: One degree removed from a foreman at an impacted plant. What I’m describing is already happening - plant I’m aware of has 14k head on hand with about 24 hours to figure it out or kill and discard. The administration is already involved and aware of the details, too, and everyone should be vigilant regarding speculation as to who’s behind it (this is likely misdirection, given who it actually is).