You can post pictures as a user. There is no secret privilege or process to that.
As a member you are allowed a voice in the direction of the club, ie ROTM. As a member, you can voice your opinion about how club functions should be run. You can say you think it should be XJ only, and people will listen. As a member, your dues go, not only to run the forum, but to multiple land use efforts, raffles (to a certain degree) such as the 25th anniversary Giveaway Jeep, etc etc.
But I mean, heck, if all you're here for is free advice on how to fix your Jeep, use away! But as more and more trails close, don't cry about it here, unless you are involved elsewhere in keeping them open. We're in no danger of not being able to maintain the site, as far as I know, but if everyone had your mindset, this forum would likely die. Thankfully, there are plenty who do see the many benefits of membership in the club, and want to have a stake in keeping this thing going so that we can be a help to people like you who only want free advice.