If you take the light rail, someone is paying for your ride. If you're not paying for it, someone else is paying for it. You're taking money out of the pocket of people who bought their ticket.

You can buy tickets in advance, or on your phone. The paper tickets are very thin and you can keep one in your wallet if you need it, and replace it on your way out. So if you're on the train without a ticket, that's a preventable mistake. You can also rectify it by buying a ticket once you're on the train.

The absence of fare enforcement is a good thing if you don't abuse it. The light rail would cost more and be less convenient with more enforcement.

Posts alerting to fare enforcement help people who don't pay take money from people who do pay. And they send the message that it's okay to not pay.

If you're taking the light rail, presumably it's helping you. If it's not worth $2.25 to you, you're not missing much if you don't take it. If it is worth something to you, but people evade the fare, maybe it will cost more than $2.25, or run less frequently, or cease to function entirely.

There's nobody who can say what "fair" is. Either the tickets pay for the light rail, or there's no light rail. Nobody is forcing you to take it and nobody is getting rich from it.

The fare enforcement alerts should be banned just like a "unlocked house, free to rob" post should be.