If you ask any website without a paywall, they will almost ALL tell you their content is free. Some even advertise and market that enthusiastically. A visit still helps them - it is still counted in server-side stats (which is used to sell ads), and I am exposed to their brand, which is a large part of what marketing is all about. There are also other forms of advertising which are not blocked - things like sponsored posts, guest posts, mailing list opt-in forms, referral links, etc.
You also conveniently ignored my question on whether or not forcing me to watch an ad or forcing me to accept behavior tracking is moral on their part. This is not a one-sided equation.