I could never use subscription software with a clause like that in a professional context. That's far too much risk to take on.

I can picture the response from them already too - "oh we would never use this clause to silence criticism of our product, that's not the intent" etc. If that's the case, then rewrite your contract so that it doesn't say you can do that - people write legal terms of use instead of ad hoc verbal agreements for a reason.

It's a shame too, because it seems like a pretty good tool otherwise.