It's really going to depend on the tea you use, each tea will expand differently.
Before I started really getting into tea, I always thought the dislike of infusers that constrain the leaves were over-blown. It didn't take long to find out otherwise, however. The problem is that when the leaves are too constrained, the outside leaves steep completely while the ones in the middle hardly steep at all. Once the desirable aspects of the leaf are extracted, the leaf will start to give off bitter and astringent qualities. So the worst case scenario with anything that constrains the tea leaves is that you can end up with a weak and bitter brew that's not much like what it's supposed to be.
Infusers like these can be fine for tea that isn't whole leaf, herbals, and teas that don't need to unfurl. Many black teas come to mind, rooibos, many other herbals, yerba mate, and maybe some greens, yellows, and whites, but the truth is that even most of those are going to be best if they have plenty of room to move around. My best suggestion would be to experiment with what you have while keeping the above in mind.