> It's a performative act and companies will just stop listening these people all together.
It is absolutely a performance but I'm not as confident as you are that it will eventually blow over like this. Adult-oriented content is getting regulated harder than ever, largely via the industrial-scale pearl-clutching of payment processors. Granted, it isn't strictly a moral objection; the moral objection is just a convenient excuse for banning companies that sell porn, because they have a much higher than standard charge-back rate and providers don't want to deal with litigating those cases since it's basically impossible to prove that you bought porn.
It's corporate cowardice in it's rawest form but I don't know if it will be overcome in the way you suggest, because fundamentally, what's causing the issue as it were, is shame about consuming adult entertainment, a shame that still grips vast swathes of the market and results in the aforementioned charge-backs.