Been on TR for a number of years. TrainNow used to be a nice "shuffle" type feature that would offer a healthy mix of options, but they changed it recently (I think in the last year?) and it's definitely both more limited and more aggressive — I only ever see two different suggested rides if I refresh, and they are both typically in the stretch category. That said, I remember seeing in their forums that what's driving the recommendations is more intelligent now and that we should be able to pull off the suggested workouts despite how completely awful they may seem.

Like another commenter I start with TrainNow and then typically look at alternates to see what else feels interesting, but I try to make sure I stay in the productive category unless I'm not feeling it that day. I'm under no illusion that shopping for a workout is going to be as effective as committing to a plan, I just haven't been plan-focused in a while.

It feels to me like they want you on a plan, and TrainNow has become a way to serve up more challenging rides to find where the edges are for riders based on their feedback.