I dont understand this sense of entitlement regarding free services.
And it is not like disqus did not warn its users , they did. Dont like it ? use something else.
> To see that happen without my explicit consent is something that is enough to turn me off from that particular service provider because I can apparently not trust them with the responsibility of not altering our relationship in a material way relative to the terms of service of the moment when I signed up for their service.
then stop using that service , what's the big deal ? did you pay for it ? no. So there is no binding contract between them and you.