TFA seems to explicitly be about the kind of simple "give input, get output" program that you only make a SaaS to keep people from being able to continue using your software without paying you every month (or visiting your site for ad impressions, or sending you their data so you can use it to train machine learning models, or whatever). Not software that necessarily requires a server. I don't think it's in the same sort of bad syllogism category as "taxation = theft".